Update Several Fields And Compare Strings

Have devloped a database to log all support issues for an application I work with.

I periodically update the database by importing from another database

for example my main table tbl_issues has fields IR_NO, DESCRIPTION and STATUS

I then import data from tbl_import which also has these fields. The following query works fine:

UPDATE tbl_support
SET tbl_support.STATUS = tbl_import.STATUS
WHERE tbl_support.STATUS <> tbl_import.STATUS
AND tbl_support.IR_NO = tbl_import.IR_NO

However I also want to do this at the same time:

UPDATE tbl_support
SET tbl_support.DESCRIPTION = tbl_import.DESCRIPTION
WHERE tbl_support.DESCRIPTION <> tbl_import.DESCRIPTION
AND tbl_support.IR_NO = tbl_import.IR_NO

How do I update both fields at the same time?