You may need to re-trigger the PO Load from the Clickhome Interface tables to the job, or re-run the PO's against the job after changing Supplier information to allow a match to occur.
To do this you need to have the appropriate permission to see the Management screen under a job. If you do not have this speak to your Manager/in-house ClickHome Administrator.
Construction Job > Management > Expand the section "Purchase Order Loads" > Click Rerun PO Load.
This is a back end process and will take a period of time. You usually will not see results immediately.
You are also able to trigger Custom steps to occur when this button is clicked. Speak to your ClickHome Consultant about this customisation.