Upon resettling and unsettling cancelled invoice register an erroneous additional voucher is created which causes an imbalance in the control accounts (IR control and PL control accounts).

It also throws out the vendor to ledger reconciliation report - fix can be done for the ledger side (the additional voucher only posts to ledger, not vendor itself) but the vendor balance difference is a report issue.

Fix to allow undo settling/resettling of cancelled IR vouchers.

I think in general the design/code on those vendor/customer/bank to ledger rec reports need looked at so they can deal with any 'out of the ordinary' transactions.