Auto Generate Invoices- Sales Order Module

We had a little issue trying to do our monthly Auto Generate Invoices.  My AR Clerk chose all repeating orders (464) instead of just the ones marked for Monthly.  I need to delete the batch.  The "delete" for the batch is grayed out.  How do I open this up to delete the batch?

I tried going into Sales Order entry and it does not show up there - understandable.  I tried going to Auto Generate Invoices Selection and Auto Generate Orders Selection and I can't get anything there either.

TIA,

Tracy