quickbms 0.8.4 will return a warning if you use reimport2 on sequential content, for example chunked files or files saved with "savepos OFFSET ; log output.dat OFFSET 0x100" and so on. That will avoid to corrupt the archive without giving any explanation to the user since currently (0.8.3) the new data is appended at the end of the file and the game will still read the old content due to the lack of an offset reference (it's sequential).
Additionally it will also zero the original space if the file is bigger, that will save space when you will distribute the compressed edited archive.
I wasn't sure if enabling or not this feature but it offers also the advantage of knowing if something is wrong with the reimport operation, let's say something doesn't work as expected and the game tries to read the old content, it will be just zeroes (invalid) and it's easy to notice it (crash, errors, corrupted images/text).
Hopefully there will be no bugs with these two changes