RE: LEI truncating values after upgrade Daniel W Heichel 9.May.14 04:31 AM Lotus Notes LEI LEI - 8.0Windows
What version of Domino and LEI did you upgrade to? Support for MSSQL 2012 was only added in 9.0 and later.
Other than that, can you test the stored procedure outside of LEI? Just in case the LEI version was not the only thing that changed; this will prove whether LEI is the culprit.
Additionally, you might want to print the value of this field in a few places, inside the stored procedure but before the value is passed to MSSQL, to ascertain when and where it becomes NULL (if the error can be taken at face value, which this should help prove).