Why are these MARC records marked for deletion?

Greetings from Confusionville, Vermont.

A whole bunch of links are set to be deleted from our catalog. Trouble is, we still have access to many them. I don’t know why they’re all marked for deletion. I’m going through the 278-title list one by one and discovering that the individual analysis is complicated and quite time-consuming.

Some are legitimate purges, such as title changes. The rest (so far) are strange.

• titles that EBSCO removed from the ScienceDirect Freedom Collection package list, but that we still have access to (I think EBSCO made a mistake)
• titles that are still checked in the Title Wizard, but are marked for deletion in the batch load (maybe someone un-checked them at the time the list was run, and then re-checked them which is why I can see them now?)

I have no interest in making a habit of reviewing the to-purge list, but there are enough red flags this month that it seems worthwhile to go through them individually. But I am so confused and stuck. And this is no time to be stuck, because this has to be figured out.