Indesign version 14.0.3 x64

Issue reproduction: Create a page number cross references that links to a text anchor on a different InDesign document. Close all documents except for the one on which the cross reference is, and then duplicate the layer.

Expected result: the cross refereferences should be preserved.

Actual result: The cross references will break and display <?> on the new layer.

Work-around: open ALL documents that are referenced first (in my case up to 100), then duplicate the layer. Cross references will be preserved.

Sample docs attached... oops "Invalid file type: .indd not allowed"
I guess I'll attach screenshots: