Hi Tamas
Nothing in standard to achieve this. However might be possible by custom program. Create a custom picking RF transaction. This T-code to scan of delivery number, Packing material for pick HU. Inside source screen check for source SU, bin verification. Background program to use function modules for WT confirmation into to pick HU. Then run repacking function module to pack mat from pick HU to original HU.
Just a thought Try WT confirmation to pick HU& repacking into original HU manually..before proceeding with coding. Let me know if it works.
Best Regards
Phani sai MN