Moving of Stock balance

Is there way of moving a stock balance from the G/L in the account determination to a new one.E.g for valuation class 1000 you have got g/l 100000 which has got a balance of $1000 but you now go and change G/L to be 110000 for the same Valuation class but you want to carry that balance (history)to a new 110000 and start inventory posting against it going forward,

seeing that the G/L is set to post automatically.