Do not treat the online form like a draft that lasts forever.
The Bangladesh Online MRV Portal FAQ currently states that saved incomplete applications are deleted after seven days, and that submitted online forms are valid for seven days. It also says answers cannot be changed after final submission.
That makes timing important. Do not final-submit the application until the core details and intended submission location have been checked carefully.
Appointment / mission location
The portal FAQ currently says the appointment location cannot be changed after final submission. Before choosing a location, verify the mission route applicable to your residence, visa category and current operating procedures.
After printing
The printed form is submitted together with the relevant supporting documents and any applicable payment evidence according to the current official process. Completion of the online form is not visa approval.
