URGENT (probably severe bug): files on Settings/Media now ignored!

Our form uses search and pulldata, accessing an external csv file (with geographic and other details for facility selection). I now deleted the csv file and replaced it with a new one (after editing a few data) – but the form kept showing the old (wrong) entries.

Then I deleted the csv file form Settings/Media (which should lead to a file not found error message), but the form (deleted and uploaded afresh on KoboCollect) kept on working (however with the old data).

I noticed that the look and feel of the Settings/Data page has changed and assume that something has gone wrong in the context of these changes.

Can you please very urgently check?