We have a number of products that we setup waaay back when we started using zoho.

Those entries are now incorrect/ no longer used.

We would like to delete them however zoho will not let us, informing us with an error message that cannot be deleted until the are unassociated from the quote/ invoice/ whatever they are associated with, see error message copied below.

Sorry xxxx xxxxx, the following could be the reason(s) for this:

Selected Product(s) cannot be deleted as they are involved in Inventory management (Quote/Sales Order/Purchase Order/Invoice).

Problem is we cannot find any of these products in any past sales orders/ quotes/ whatever.

Is there simply a way to force zoho to delete these?

Or alternately force zoho to tell us just wtf they are associated with (rather than the generic warning we are getting)?

It's causing us a huge headache as we are trying to get completely up to date with all our products and we can't do this until we clear out the old cruft.

thanks in advance