When importing a Word file whose text includes over 150 URLs, the link info gets dropped for some of those links. This has happened with several competely different projects for me. I am including the Word file, and also a PDF -- exported from the INDD file. The bad links are circled in the PDF (as comments).
Evidently this site does not allow me to upload the INDD file (even when it is Zipped) -- which seems odd, since you might need it to diagnose the problem.
THIS IS A BUG REPORT, not an "idea". Prior versions of InDesign did not have this problem.
I am using InDesign 16.1 (the current version) on a Mac Pro (2019) running Mac OS Big Sur 11.2.3 (the current OS).