Encounter power rail short

Hello,

I am trying to place a big macro in encounter. The macro has its first and last power rail of type vdd!.

By default it is placed starting from the gnd! special route rail. So I have a short as shown at the attached picture.

I think that this problem origins from the abstract tool, where I  have the "cell has no power terminals" message (abs-1086, abs-1087).

Even though I manually add at the abstract design a vdd! pin of layer purpose metal1 net,  and export the lef of the macro again (the vdd! pin is included) the problem remains.

Can you please help me overcome this situation?

Thanks,

Thodoros