Bit technical this one.
If you have dropped a SQL table, but not changed the connection string, does it continue to get updated?

I have an issue where the Form seems to be attached to a dropped SQL table. Updates are not replicated in the CP version, but are correct on the form, 100% correct.

This is evidenced by Field rules in the Table not being visible if you edit a Form, choose a field and edit the Field rules that way.

Anyone noticed this?