Well..the answer for your reported issue is easy:
Do not scan 7z files. As mentioned before the scanner isn't yet able to do that. The generic packer routines already read the 7z archives but the set name compare takes the .7z extension into account which it shouldn't and so it says it's wrongly named. And fixing the name will end with all named .zip because the scanner sees the file is an archive but only supports zip, so it adds .zip.

As I said: Don't scan 7z files.

The dats look ok..but they need a little bit cleaning (like should it really include "5200 2.01 Merge.log" etc...) And you don't need to add a manufacturer tag.

Enjoy the weekend
Roman



Roman Scherzer