CaniI split categories when matching cheque already entered in quickbooks. i see you can if you "add" but then this surely duplicates the entry if already entered as chq

Hello Flex1, 

Welcome to the Community page, 

You could delete the transaction you have created already and redo it by the add so you get the spilt option and this would then not do any duplications.

As the split is only available on the add as the split refers to a chart of account categories in the case of an expense as you can only have one payee in an expense split and in this case the categories would already be part of the cheque.