MergeOp requires changes that get submitted together to be reloaded so
that we don't rely on (potentially) stale data. I1f06588c will change
some of the query parameters and we want to do a clean reload based on
ChangeData.Factory.
Change-Id: I0e07f4b12e277d930023d0c86eff73590707f9dc
3e7b722523