Fix METRemappingAlg for PHYS->PHYSLITE production
The PHYS->PHYSLITE production workflow is currently generating an error in the METRemappingAlg due to the WriteHandles being checked for validity before they are recorded to. Simply reordering the isValid
check to be after the record
fixes this issue.
See JIRA: ATLASG-2653
Edited by Vangelis Kourlitis