Only reset Donation and Pmt Imported fields when needed
Only reset Donation and Pmt Imported fields when needed

If the stored vars are already null for the donation and payment
imported fields, then there shouldn't be any need to load null values
into their field components on the form.  This prevents the load()
function from being called during the reset operation if these vars are
already null.

SalesforceFoundation/Cumulus,SalesforceFoundation/Cumulus,SalesforceFoundation/Cumulus,SalesforceFoundation/Cumulus