Fixed model merging problem in chado-db.
Fixed model merging problem in chado-db.



Former-commit-id: fb098ffa750c7f0db7b6685aa1053afdddf010e0
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine