Should i keep or switch jobs?

i am a hair stylist. iv been doin hair about 2 years, of worked for the same company and im about to move to a new store and be promoted to t. manager! the only problem is... the current store i work in just moved too and we got a brand new store, except things just arent the same, no one, eps. me likes the way things are being ran now. our manager now seems to just be playing *** kiss to our owner (so she can be promoted in the next coming years) and shiting on everyone else in the process. i am good friends with my co workers, and everyone feels the same. and everytime we bring ne thing up our manager ends the conversation. i used to love coming to work now i have to fake it all day because i'm really in a bad mood. it just sucks because i'm about to get my promotion. help!