This solution is for source derivative rule :
You will need to map the A1 portion of it to a target A1 : For example A1#[ A;B;C] = ABC_NEW and then when you do a TR , map the account and A1 combo to the target account where you want it to go. Hope this helps
The above is the case if you want this account and A1 combos to go to a single target account .
If you want 56000 and A1[ACC-*] To go to a single target you need to have separate lines as below :
A#[56000] = ABC:A1[ACC-*] = ABC
A#[56000] = XYZ:A1[ACC-*] = XYZ
and then use TR (TRANSFORMATION RULE ) to map to the correct account using the account and A1 combo .