auto uncheck the table permit

I have database called "backoff" at both server A and server B.

server A and server B is same,

but I copy the server A database to server B
the server B before paste the server A database, I set the userA in
security > logins > "userA" > checked the database access permit for some
table but after paste the database, it auto uncheck.

Information --> The userA are owner for some table in the database

help ...........

I *think* this question relates to the database engine so I've moved it to that forum. If it's really about tools, it may get moved again. Dollysheep, any clarifications you can offer would be appreciated.

Paul