As soon as you leave scanning there's no way to go back to it. You have to select scan and it will do a time consuming reload again. Could a solution be to take off the antenna? It's a BNC connector so are done quickly. Or push the SEL button on a conversation to enter pause mode and then push arrow left or right to go to the next TG or frequency, that hopefully are quiet. Then push SEL again to continue scan.
/Ubbe