@aremiaskfa Thanks for yet another great report.
So it turns out we do have a bug in config restore, but alas it has yet to be tracked down. As time permits we should be able to creep-up on this one. Fancy creating a GitHub issue, identifying this bug in 4.5.5-0 so we have attribution come the time we find and fix this? We can then add it to the next Stable milestone as we definitely need this working!!
We need a reproducer on a clean system ideally. And from initial tests it simply fails to establish the upload of old file. Lets start with this bug point and once that is issued and fixed we can take it from there. Bit by bit.
Hope that helps, and thanks again for all the testing reports.