Does the current behaviour make sense? I get that unit/dimension is stripped when sending to plain Number item (also noted in release notes).
But I do find it unexpected that the same is done with items having Number:DIM, depending on channel type. Essentially this means that the command handling depends also on channel type, not just item type.
Downside is concretely demonstrated here: profiles are more limited with commands, they cannot mutate/change with the dimension/unit.
@J-N-K thoughts?