In eTapestry, the Received Amount field does not update when segments are recorded for Split Transactions This would save steps to already have that calculated.  Eg. a $1000 gift with 3 segments.  Enter the first segment of $400 for Capitol Expansion, then the Received Amount would automatically update to $600.  Enter the 2nd segment of $250 for a Memorial donation and the Received Amount for the 3rd segment would be $350.  The 3rd field would then have to be entered as $350 since that is all that is left from the $1000 donation.  Currently, after entering the first segment, the Received Amount for the next segment always defaults to the entire Received Amount, even though that information is now irrelevant. 
This would be the "check" for the transaction, rather than inputting incorrect amounts and then getting the error message.  Standard procedure in other areas of business and banking.