Hi, we can't replicate this issue on our end.
Can you confirm that you are the owner of the study now, not just a collaborator? If you are a collaborator, then what you described is supposed to happen: the study is the original owner's study, and it references files from the original owner's bank of files.
You can use the "transfer this study" feature to make this study officially yours (i.e., initiate a transfer request from the personal account and then accept it in the lab account). After a successful transfer, the study will disappear from your personal account. The lab account will take over completely.
Can you confirm that you are the owner of the study now, not just a collaborator? If you are a collaborator, then what you described is supposed to happen: the study is the original owner's study, and it references files from the original owner's bank of files.
You can use the "transfer this study" feature to make this study officially yours (i.e., initiate a transfer request from the personal account and then accept it in the lab account). After a successful transfer, the study will disappear from your personal account. The lab account will take over completely.