problems with RCSCIS-20.0

Good afternoon all

From October 2021 i am having issues with the RCSCIS-20.0 VAT code. Any invoices generated appear immediately on my quarterly VAT sheet and not when I receive payment (which is sometimes up to 2 months later). I am on VAT 'cash' basis and have checked the relevant settings in quickbooks and all have 'cash' selected. This was working perfectly up until the beginning of October.

I am only having issue for RCSCIS-20.0 VAT code, the standard VAT codes are recording when the payment is received and not when the invoice is generated which is what I want.

Any help would be greatly appreciated.