In the text, I have pdf figures included, two or three figures in a single place (with a single caption). Then I changed files of figures and saved them in the same place with the same names. Then make Document -> Update -> All. Then sometimes nothing changed or a single figure changed, only. The new figures appear if I reopen tm file. Maybe there is an option to update figures?
Maybe you have to chose “link figure” instead of “insert figure”…
This sounds like this bug:
It is possible to add a comment to the bug report on Savannah, if one does it, the report might get more attention
I always use
link figure, only.
I just added to savannah.