The item order on exit didn't correspond to the order in the delete history dialog, so there is shift by 2 starting after the "Quick filter: Articles" entry (but better not to use it since the order on exit will be fixed), the issue was introduced when adding newznab quick filter bar.
I fixed it in v7.5.3
https://www.usenetexplorer.com/older.htm if you don't need internal 7z since otherwise it should work the same (I wasn't so sure about the 7z third party code running in the UE process address space, so all changes were made in v7.5.3 as well, but as of now there are zero issues). I may compile v7.6 later (I only fixed its source code, the delete history dialog source file is identical to v7.5.3).