I use to be able to drag a patch to a layer in the program tree and it would replace the layer once the layer was hi-lighted in red. Now it will only merge the layers and not replace them. This does not seem to be the correct behaviour. I have tried it on 2 different machines with the same result. It worked fine prior to 6.1.
I’m able to reproduce it here. Its now in our Defect-Tracking-System and listed as Bug-ID “HALLY-7294”.
I hope we can provide a fix for it soon.
Thanks for your report and please accept my apologies for any inconvenience caused.