InDesign links and Box Drive
This appears to be an issue only with InDesign and Box Drive.
Steps to reproduce:
1. In InDesign, link to an Illustrator file or PDF with multiple artboards, layers, or pages from the Box Drive folder.
2. Place the file and select a single artboard or page.
3. Save, close, and re-open the file.
The linked file will no longer update. Perpetually needs updating even though the file hasn't changed.
The workaround is to save the linked file to Adobe Libraries.
The file link should show that it is updated in the links panel.
Application: InDesign v126.96.36.199
OS: macOS v11.2.3, RAM: 16.00 GB, CPUs (logical): 8