After calling RenameIFile() on a partition host file that has partition members that have been purged and made reusable (but not yet recreated), the partition resource in the partition host file does not contain entries for these partition members. This can potentially cause problems if a global unique index exists and it contains key values from the purged partition members, as removing the partition member entry from the partition resource loses the partition instance information for that partition. The partition instance value is part of the key value in the global unique index to determine which partition a key belongs to. To prevent this loss of information, the entry for the partition is now kept regardless, when a partition instance value is non-zero.