Indesign CC 2022, v17.
Steps to reproduce :
1. open two documents which have the same linked file (image) embedded
2. edit the image outside of ID.
3. relink the file in one of two documents, so it becomes unembedded
4. copy the unembedded file to the other document, overwriting the same, but still embedded object/image.

Exprect result: the object in the target document should not be embedded anymore and it should be up-to-date.

What happens: depending on how the files is placed (inside a table cell or not) ID will only mark it as "it has been changed" by the yellow triangle or overwrite, but keep it embedded. If it shows the yellow triangle and since it's considered as embedded by ID, it cannot be updated (update button locked), which keeps the yellow triangle showing and overlaying the symbol for embedded objects so you don't know whether it's still embedded or not, until you right-click and find the "Unembed file" option.

Note: this doesn't happen in 14.0.3.