diff --git a/toonz/sources/toonz/filebrowserpopup.cpp b/toonz/sources/toonz/filebrowserpopup.cpp
index 0098446a..84dc4d28 100644
--- a/toonz/sources/toonz/filebrowserpopup.cpp
+++ b/toonz/sources/toonz/filebrowserpopup.cpp
@@ -2265,13 +2265,15 @@ void BrowserPopupController::openPopup(QStringList filters,
   m_browserPopup->initFolder(TFilePath(lastSelectedPath.toStdWString()));
   m_browserPopup->setFileMode(isDirectoryOnly);
 
+  Qt::WindowFlags flags = m_browserPopup->windowFlags();
+  bool parentSet        = false;
   if (parentWidget) {
     for (QWidget *pwidget : QApplication::topLevelWidgets()) {
       if (pwidget->isWindow() && pwidget->isVisible() &&
           pwidget->isAncestorOf(parentWidget)) {
-        Qt::WindowFlags flags = m_browserPopup->windowFlags();
         m_browserPopup->setParent(pwidget);
         m_browserPopup->setWindowFlags(flags);
+        parentSet = true;
         break;
       }
     }
@@ -2284,6 +2286,13 @@ void BrowserPopupController::openPopup(QStringList filters,
     m_isExecute = true;
   else
     m_isExecute = false;
+
+  // set back the parent to the main window in order to prevent to be
+  // deleted along with the parent widget
+  if (parentSet) {
+    m_browserPopup->setParent(TApp::instance()->getMainWindow());
+    m_browserPopup->setWindowFlags(flags);
+  }
 }
 
 // codePath is set to true by default
diff --git a/toonz/sources/toonz/iocommand.cpp b/toonz/sources/toonz/iocommand.cpp
index 7e056ed3..9ca73415 100644
--- a/toonz/sources/toonz/iocommand.cpp
+++ b/toonz/sources/toonz/iocommand.cpp
@@ -1917,6 +1917,7 @@ bool IoCmd::loadScene(const TFilePath &path, bool updateRecentFile,
       scene->getProperties()->getFieldGuideAspectRatio());
   IconGenerator::instance()->invalidateSceneIcon();
   DvDirModel::instance()->refreshFolder(scenePath.getParentDir());
+  // set dirty for xdts files since converted tnz is not yet saved
   TApp::instance()->getCurrentScene()->setDirtyFlag(isXdts);
   History::instance()->addItem(scenePath);
   if (updateRecentFile)
diff --git a/toonz/sources/toonz/xdtsimportpopup.cpp b/toonz/sources/toonz/xdtsimportpopup.cpp
index 40f149e5..acc7d1ba 100644
--- a/toonz/sources/toonz/xdtsimportpopup.cpp
+++ b/toonz/sources/toonz/xdtsimportpopup.cpp
@@ -65,7 +65,7 @@ XDTSImportPopup::XDTSImportPopup(QStringList levelNames, ToonzScene* scene,
   connect(loadButton, SIGNAL(clicked()), this, SLOT(accept()));
   connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));
 
-  addButtonBarWidget(cancelButton, loadButton);
+  addButtonBarWidget(loadButton, cancelButton);
 
   updateSuggestions(scenePath.getQString());
 }
@@ -75,8 +75,17 @@ XDTSImportPopup::XDTSImportPopup(QStringList levelNames, ToonzScene* scene,
 void XDTSImportPopup::onPathChanged() {
   FileField* fileField = dynamic_cast<FileField*>(sender());
   if (!fileField) return;
+  QString levelName = m_fields.key(fileField);
   // make the field non-suggestive
-  m_pathSuggestedLevels.removeAll(m_fields.key(fileField));
+  m_pathSuggestedLevels.removeAll(levelName);
+
+  // if the path is specified under the sub-folder with the same name as the
+  // level, then try to make suggestions from the parent folder of it
+  TFilePath fp =
+      m_scene->decodeFilePath(TFilePath(fileField->getPath())).getParentDir();
+  if (QDir(fp.getQString()).dirName() == levelName)
+    updateSuggestions(fp.getQString());
+
   updateSuggestions(fileField->getPath());
 }
 
@@ -119,15 +128,39 @@ void XDTSImportPopup::updateSuggestions(const QString samplePath) {
     if (fileField->getPath().isEmpty() ||
         m_pathSuggestedLevels.contains(levelName)) {
       // input suggestion if there is a file with the same level name
+      bool found = false;
       for (TFilePath path : pathSet) {
         if (path.getName() == levelName.toStdString()) {
           TFilePath codedPath = m_scene->codeFilePath(path);
           fileField->setPath(codedPath.getQString());
           if (!m_pathSuggestedLevels.contains(levelName))
             m_pathSuggestedLevels.append(levelName);
+          found = true;
           break;
         }
       }
+      // Not found in the current folder.
+      // Then check if there is a sub-folder with the same name as the level
+      // (like foo/A/A.tlv), as CSP exports levels like that.
+      if (!found && suggestFolder.cd(levelName)) {
+        TFilePathSet subPathSet;
+        try {
+          TSystem::readDirectory(subPathSet, suggestFolder, true);
+        } catch (...) {
+          return;
+        }
+        for (TFilePath path : subPathSet) {
+          if (path.getName() == levelName.toStdString()) {
+            TFilePath codedPath = m_scene->codeFilePath(path);
+            fileField->setPath(codedPath.getQString());
+            if (!m_pathSuggestedLevels.contains(levelName))
+              m_pathSuggestedLevels.append(levelName);
+            break;
+          }
+        }
+        // back to parent folder
+        suggestFolder.cdUp();
+      }
     }
     ++fieldsItr;
   }
diff --git a/toonz/sources/toonz/xdtsio.cpp b/toonz/sources/toonz/xdtsio.cpp
index ee66a93d..b7f26d12 100644
--- a/toonz/sources/toonz/xdtsio.cpp
+++ b/toonz/sources/toonz/xdtsio.cpp
@@ -10,6 +10,9 @@
 #include "toonz/txsheethandle.h"
 #include "toonz/tscenehandle.h"
 #include "toonz/preferences.h"
+#include "toonz/sceneproperties.h"
+#include "toonz/tstageobject.h"
+#include "toutputproperties.h"
 
 #include "toonzqt/menubarcommand.h"
 #include "toonzqt/gutil.h"
@@ -135,12 +138,19 @@ QVector<int> XdtsFieldTrackItem::getCellNumberTrack() const {
   std::sort(frameCellNumbers.begin(), frameCellNumbers.end(), frameLessThan);
 
   QVector<int> cells;
-  int currentFrame = 0;
+  int currentFrame  = 0;
+  int initialNumber = 0;
   for (QPair<int, int> &frameCellNumber : frameCellNumbers) {
     while (currentFrame < frameCellNumber.first) {
-      cells.append((cells.isEmpty()) ? 0 : cells.last());
+      cells.append((cells.isEmpty()) ? initialNumber : cells.last());
       currentFrame++;
     }
+    // CSP may export negative frame data (although it is not allowed in XDTS
+    // format specification) so handle such case.
+    if (frameCellNumber.first < 0) {
+      initialNumber = frameCellNumber.second;
+      continue;
+    }
     // ignore sheet symbols for now
     int cellNumber = frameCellNumber.second;
     if (cellNumber == -1)
@@ -417,6 +427,8 @@ bool XdtsIo::loadXdtsScene(ToonzScene *scene, const TFilePath &scenePath) {
   scene->setProject(sceneProject.getPointer());
   std::string sceneFileName = scenePath.getName() + ".tnz";
   scene->setScenePath(scenePath.getParentDir() + sceneFileName);
+  // set the current scene here in order to use $scenefolder node properly
+  // in the file browser which opens from XDTSImportPopup
   TApp::instance()->getCurrentScene()->setScene(scene);
 
   XDTSImportPopup popup(levelNames, scene, scenePath);
@@ -468,9 +480,24 @@ bool XdtsIo::loadXdtsScene(ToonzScene *scene, const TFilePath &scenePath) {
       for (; row < duration; row++)
         xsh->setCell(row, column, TXshCell(level, TFrameId(lastFid)));
     }
+
+    TStageObject *pegbar =
+        xsh->getStageObject(TStageObjectId::ColumnId(column));
+    if (pegbar) pegbar->setName(levelName.toStdString());
   }
   xsh->updateFrameCount();
 
+  // if the duration is shorter than frame count, then set it both in
+  // preview range and output range.
+  if (duration < xsh->getFrameCount()) {
+    scene->getProperties()->getPreviewProperties()->setRange(0, duration - 1,
+                                                             1);
+    scene->getProperties()->getOutputProperties()->setRange(0, duration - 1, 1);
+  }
+
+  // emit signal here for updating the frame slider range of flip console
+  TApp::instance()->getCurrentScene()->notifySceneChanged();
+
   return true;
 }