[WT-support] Deleting QTCs allready stored?

[Ulrich Hilsinger]

Good morning,
I have the following problem:
A QSO partner was erroneously sending "QSL" after I was sending QTCs to 
him. After I stored the QTCs, he sent "sorry too much QRM, let us try 
again tomorrow" - so obviously he has not received nor stored the QTCs.

How can I delete the already sent QTCs now? I found no way to edit them.

73,
Ulrich, DH0GHU