Can I participate in bds/bams mop-up round after allotment in BUMS and submitted original documents and paid the fees?

Yes, you can definitely sit in the mop-up round. If you get admission in bds/bams in the mop-up round, just take out your documents from BUMS college and take admission in bds/bams. If you have deposited the security money, then it will be difficult to take out security money.