@Asif Khan Thanks for your query. As far as I understand, you can only map one tenant to one Log Analytics workspace. Mapping one tenant to multiple workspaces isn't supported for Windows Update for Business reports. Also note, if you change the Log Analytics workspace for Windows Update for Business reports, stale data will be displayed for about 24 hours until the new workspace is fully onboarded. You will also need to reconfigure the Windows Update for Business reports settings to enroll again.
If you need further assistance on this issue, I would suggest you to raise Azure Customer Support Ticket by following steps mentioned in this document.