The usual word of caution! Make a good backup of the whole disk, before you attempt anything.
I have used Eusus several times in this situation. Before you get to the final part "operations pending" make sure you have got everything as you want it. I have, on one occasion, totally ruined my partition set up with Eusus.The problem lies with the GPD protected partition. It is possible that Eusus may not even be able to proceed on a GPD. HD