So there's a few quirks about #resampling #audio in #LogicProX
If you're trying to #resample you likely need to pull up the Project browser panel and use "Copy/Convert File(s)... ^K" under the Audio File drop-down menu and check "Change file reference in Project Audio"
I always make a New Alternative... in the File > Project Alternatives menu before making major changes that the undo button won't fix. This will save your project when it gets messed up.