select next highest rank number to allow multiple mappings in one database
select next highest rank number to allow multiple mappings in one database

at7/ensembl,willmclaren/ensembl,danstaines/ensembl,james-monkeyshines/ensembl,at7/ensembl,mjg17/ensembl,muffato/ensembl,danstaines/ensembl,at7/ensembl,mjg17/ensembl,danstaines/ensembl,at7/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,willmclaren/ensembl,muffato/ensembl,james-monkeyshines/ensembl,muffato/ensembl,Ensembl/ensembl,Ensembl/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,mjg17/ensembl,muffato/ensembl,mjg17/ensembl