Hi,
I have the same problme and have a successful test base on above information, there are several point:
1, set up a ST for have QC indicator at general and putaway level
2, also maintain 0WHT and 0IBD condition in pack spec at the same time
3, set Optimize Access Strategy with sequence number 0 for qty group, and have anothen stragegy with big sequence number for non qty group.
4, set up different ST search sequence for qty class and non qty class(qty class for ST with QC)
5, create HU for ID base on the pack spec and then create WT
the system will propose ST with qc for the HU WT and propose the another ST for product WT.
by the way, my version is EWM7.01. hope this help.