SAP is just using the values from the PR and comparing it with the values and value ranges from your release classification. And based on the matching classification it finds the release strategy in T16FS .
So I think there is something really screwed up in your release strategy tables because of incorrect changes and deletions.
Provide screenshots from OMGSCK and from T16FS (sorted by FRGSX value, showing all 01 and 06 records)