diff --git a/.github/workflows/tct.yml b/.github/workflows/tct.yml
index 0449dd1..84aa970 100644
--- a/.github/workflows/tct.yml
+++ b/.github/workflows/tct.yml
@@ -8,14 +8,12 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-          - windows-latest
-          - macos-latest
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
       # lix
-      - uses: lix-pm/setup-lix@master
+      - uses: https://k7izh9.gitea.cloud/kiss-lang/setup-lix@1.0.2
         with:
           lix-version: 15.12.0
       
diff --git a/tct/src/tct/FileConversionProject.kiss b/tct/src/tct/FileConversionProject.kiss
index 7ab159d..2709662 100644
--- a/tct/src/tct/FileConversionProject.kiss
+++ b/tct/src/tct/FileConversionProject.kiss
@@ -62,9 +62,9 @@
             (+= tctContent "${block.id} ${block.locked}\n")
             (File.saveContent tctFile tctContent))))
 
-(method :Void _saveBlock [:Block block]
+(method :Void _saveBlock [:Block block &opt :Bool lastBlock]
     (when block.inText
-        (unless (block.inText.endsWith inBlockTerminator)
+        (unless (or lastBlock (block.inText.endsWith inBlockTerminator))
             (+= block.inText inBlockTerminator)))
     (File.saveContent "${blockDir}/${block.id}.${inExtension}" block.inText)
     (when block.outText
@@ -92,8 +92,11 @@
 
     (_saveTctFile)
 
-    (doFor block blocks
-        (_saveBlock block))
+	(let [lastBlock (blocks.pop)]
+        (doFor block blocks
+            (_saveBlock block))
+        (_saveBlock lastBlock true)
+        (blocks.push lastBlock))
 
     (_saveOutputFiles)
 
@@ -123,7 +126,7 @@
         ((objectWith [type Insert] blockIndex newBlock)
             (blocks.insert blockIndex newBlock)
             (_saveTctFile)
-            (_saveBlock newBlock))
+            (_saveBlock newBlock (= blockIndex (- blocks.length 1))))
         ((objectWith [type Delete] blockIndex oldBlock)
             (when .locked (nth blocks blockIndex) (return false))
             (blocks.splice blockIndex 1)
@@ -134,7 +137,7 @@
                 (return false))
             (setNth blocks blockIndex newBlock)
             (_saveTctFile)
-            (_saveBlock newBlock))
+            (_saveBlock newBlock (= blockIndex (- blocks.length 1))))
         ((objectWith [type JoinDown] blockIndex oldBlock newBlock)
             (when (or (isNull newBlock) oldBlock.locked newBlock.locked)
                 (return false))
@@ -142,9 +145,9 @@
             // allow subcommands to record their simple step-by-step history,
             // then return early
             (return (and
-                        (insertBlock blockIndex "${oldBlock.inText}${newBlock.inText}" "${oldBlock.outText}${newBlock.outText}" false)
-                        (deleteBlock (+ blockIndex 2))
-                        (deleteBlock (+ blockIndex 1)))))
+                        (deleteBlock (+ blockIndex 1))
+                        (deleteBlock (+ blockIndex 0))
+                        (insertBlock blockIndex "${oldBlock.inText}${newBlock.inText}" "${oldBlock.outText}${newBlock.outText}" false))))
         (never otherwise))
     (changeHistory.push change)
     (_saveOutputFiles)
diff --git a/tct/src/tct/TestMain_.kiss b/tct/src/tct/TestMain_.kiss
index 86b09f5..e5c2717 100644
--- a/tct/src/tct/TestMain_.kiss
+++ b/tct/src/tct/TestMain_.kiss
@@ -47,16 +47,16 @@
         // Test block insertion
         (project.insertBlock 0 "not " "!")
         (project.insertBlock 2 "not " "!")
-        (assertExportContents project "not here\n\nnot there" "!\n!\n")
+        (assertExportContents project "not \n\nhere\n\nnot \n\nthere" "!\n!\n")
         
         // Test block deletion
         (project.deleteBlock 0)
-        (assertExportContents project "here\n\nnot there" "!\n")
+        (assertExportContents project "here\n\nnot \n\nthere" "!\n")
         (assertEquals 6 .length (FileSystem.readDirectory "${project.directory}/blocks"))
         
         // Test block editing
         (project.editBlock 2 "here" "!!!" true)
-        (assertExportContents project "here\n\nnot here" "!\n!!!\n")
+        (assertExportContents project "here\n\nnot \n\nhere" "!\n!!!\n")
 
         // Test trying to delete locked block
         (assert !(project.deleteBlock 2))
@@ -64,22 +64,22 @@
         (assert !(project.editBlock 2 "edit" "locked block"))
         (project.toggleLock 2)
         (assert (project.deleteBlock 2))
-        (assertExportContents project "here\n\nnot " "!\n")
+        (assertExportContents project "here\n\nnot \n\n" "!\n")
         
         // Test undo/redo delete
         (project.undoChange)
-        (assertExportContents project "here\n\nnot here" "!\n!!!\n")
+        (assertExportContents project "here\n\nnot \n\nhere" "!\n!!!\n")
         (project.redoChange)
-        (assertExportContents project "here\n\nnot " "!\n")
+        (assertExportContents project "here\n\nnot \n\n" "!\n")
 
         (project.undoChange)
         (project.undoChange)
         
         // Test undo/redo edit:
         (assert (project.undoChange))
-        (assertExportContents project "here\n\nnot there" "!\n")
+        (assertExportContents project "here\n\nnot \n\nthere" "!\n")
         (project.redoChange)
-        (assertExportContents project "here\n\nnot here" "!\n!!!\n")
+        (assertExportContents project "here\n\nnot \n\nhere" "!\n!!!\n")
         )
 
     (rmrf "test.tct")