Compatibility.md

@@ -42,9 +42,10 @@ copy-resource-pack:
   - MythicHUD/built-pack
 ```
 - Copy version core shaders into the `Itemsadder/Contents` folder:
-  - To support versions 1.20.5-1.21.1, copy the `MythicHUD/built-pack/modern` folder into the `Itemsadder/Contents` folder.
   - To support versions 1.21.2+, copy the `MythicHUD/built-pack/modern-plus` folder into the `Itemsadder/Contents` folder.
-  - ⚠️You *cannot* use both, see "Overlays Issue" segment below
+  - To support versions 1.20.5-1.21.1, copy the `MythicHUD/built-pack/modern` folder into the `Itemsadder/Contents` folder.
+  - To support versions 1.19-1.20.4, copy the `MythicHUD/built-pack/assets/` folder into the `Itemsadder/Contents` folder.
+  - ⚠️You can *only use one* of these version sets, see "Overlays Issue" segment below
 - MythicHUD's pack elements should now merge on `/iazip` command.
 
 <details><summary>ℹ️ItemsAdder Overlays Issue</summary>