Custom report - transaction types

[Gally]

I have old reports that grouped by transaction type. the new payment/receipt field seems to include the payment receipt number as well and not just the transacion type. How do I group by just payment, receipt and transfers. My old report do not work and I have spent a long time trying to replicate them.

A similar question from alasdair has no answer

thanks

[alasdair]

And I’d still like to see a solution as I have not been able to find any other way to do so