diff --git a/packages/server/src/api/controllers/table/external.js b/packages/server/src/api/controllers/table/external.js
index 86d855a28e..1263bb6216 100644
--- a/packages/server/src/api/controllers/table/external.js
+++ b/packages/server/src/api/controllers/table/external.js
@@ -118,8 +118,8 @@ function generateManyLinkSchema(datasource, column, table, relatedTable) {
     },
   }
   column.through = junctionTable._id
-  column.throughFrom = primary
-  column.throughTo = relatedPrimary
+  column.throughFrom = relatedPrimary
+  column.throughTo = primary
   column.fieldName = relatedPrimary
   return junctionTable
 }
@@ -146,7 +146,7 @@ function generateRelatedSchema(linkColumn, table, relatedTable, columnName) {
   // is many to many
   else {
     // don't need to copy through, already got it
-    relatedSchema.fieldName = linkColumn.throughFrom
+    relatedSchema.fieldName = linkColumn.throughTo
     relatedSchema.throughTo = linkColumn.throughFrom
     relatedSchema.throughFrom = linkColumn.throughTo
   }