Hello Student

If you accept any alloted seat whether it is management quota or in normal process in NEET UG counselling then seat allotted to you in prior counselling will be cancelled. On the other hand if you do not accept  upgradation of your seat then the prior  seat allotted to you may not be cancelled. If you join in the  seat for which you have applied for upgradation for government college then if the upgradation is done normally then you have to join in the upgraded  seat allotment in government college.

Hope this will help.