can my emoployer lower my pay rate if i am transfered to a different store and am forced to step down from my managment position

Do you have a contract wich provides that you will be paid at a certain rate?  Do you believe that your pay is being reduced because you are being discriminated against for some prohibited reason, such as age, gender, religion, etc.?  If the answer to both of these questions is no, then your employer can lower your pay.