Single payment for multiple invoices gone?

Paying consultant invoices at end of month as usual and suddenly--and I mean suddenly, from one transaction to next--the ability to have a single payment for multiple invoices seems to have disappeared.

Usually I use Money Out under relevant bank account, select supplier and then unpaid purchase invoices are listed for me to choose. Did it on one company--fine. Switched to next company (for same consultant working on a different project) and it's gone! System just wants to record a new payment.

Have been back and forth checking, but no change. So I guess I'll have to go through and record payments against each invoice even though single bank payment.

Any clues what's going on?