We are working to get to a point of using the IFS Bank Reconciliation, but need to mass update existing transactions from the past several years.  (Reconciliation was done via spreadsheet outside of IFS)

I am able to pull the data into the Migration tool, updated the Matched field only, but when I try to validate or execute I get the following error:   Field lIDENTITY] in Payment Transaction may not be modified.

We are not changing the Identity field, is there something that can be done to make this work?