Try This
1. Open the Original file in AC11 and save as PLA saving only with used objects.
2. Open the PLA (in AC11) and extract the Library to a folder
3. Open the PLA file in AC12 and link to the previously extracted library only.
4. If it works then add the AC12 and AC11 migration library and start removing the duplicates from the extracted library.
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Watch out for Zone Labels moving.
Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
another Moderator