Quotes and DocQuoteAMT

We are on 9.05.701 and have come accross an issue.  It has been picked up as SCR 8739BRK.  Apparently if you delete a line on a quote then the docquoteamt field does not get updated.  The doctotalgrossvalue does.

The SCR states that if you change the price on one of the remaining lines save the change it back it will update.

Any ideas on how you could build a BPM to automate the price update and refresh?

Simon Hall