When using Adobe Projects with Illustrator and Indesign 2026, Indesign does not recognize .AIC files as "compatible" files when attempting to place in an Indesign document. Indesign Version - 21.0.2, Illustrator Version - 30.1.

Steps to reproduce:

Create Illustrator document, save as Adobe Cloud Document, or in Adobe Project Folder
Attempt to place document by Navigating to "File", "Place" or by pressing CMD+D
Illustrator files will not be listed as available
Selecting "On Your Computer" and navigating to an Illustrator file will allow it to be placed

Expected Result:
Being able to place a file from Adobe Project.

Actual Result:
None.