You are lucky Zia bhai
It my assumption that may be who has sent their bank certificate (an example) from Islami Bank but no any statement then it might ask later to provide statement !!!
In the opposite way if someone has sent the bank certificate from SCB/HSBC may be VO office didn't ask to provide any statement. It may be VO can check the statement from their local country's banking channel as a global banking system.
Yes it is fully depend on case officer as well as online banking system linked up with global banking system.
Any brother from this forum who is working in banking sector can give us more clarity on this issue???