PASSPORT CHANGE

hello.i need help iam almost going for vacation ,but ill go with a valid work visa in my passport.NOW THIS PASSPORT IS NOT EXPIRED BUT IN MY COUNTRY (UGANDA)WE ARE CHANGING PASSPORTS TO EAST AFRICAN PASSPORT.MEANING ILL HAVE A NEW PASSPORT AND YET VISA ON THE PHASED OUT PASSPORT..HOW WILL I ENTER BACK IN BAHRAIN

First, don't post in caps.

Carry both passports with you on return. Then when you arrive, the visa can be moved to the new one.