Purging transactions

We have over 12,000 sales ledger accounts on our Sage 200 and it crashes every time we attempt to purge archived transactions from all accounts due to how many we have. This leaves us the only other option to delete transactions from a single account, and go through all the necessary accounts, which can be in it's thousands. Would be great if there was a tick box option where you could select a number of accounts to purge for for example purge through 100 accounts at a time, to prevent it crashing but would save time rather than doing 1 account at a time.