Edit: 2021-11-13: The bug this application was created to solve has apparently been fixed at some point by Backblaze, and this application may be less relevant than in earlier years.
The BackBlaze client contains a bug: whenever you select a new drive for backup, the list of exclusions is reset with no questions asked.
This tool keeps track of non-default paths in BZ's exclusion list, and allows you to merge them back to BZ's config after the list is reset.
This tool comes with NO WARRANTY. Even though it might work as expected, it's not a bad idea to back up your C:\ProgramData\BackBlaze\bzdata\bzinfo.xml before using this tool.
This project is not affiliated with BackBlaze in any way. BackBlaze is probably a trademark, and belongs to its owner.