Q: Can an author be converted to the corresponding author during the revised submission?

While this is not preferred by the journal (as the editor has already formed a connect with one person), this is allowed – as long as you provide a strong reason for doing so. For instance, the earlier corresponding author may have left, there may have been a conflict between you both/all during the revisions of the paper, or something such.

Ideally, the earlier corresponding author should write a transition mail before leaving the equation. In case they haven’t done so, you may make a ‘first contact’ with the editor, explaining the reasons for the change, before sending the revised submission – to avoid any surprises during the resubmission.

For more insights around this scenario, you may go through these similar queries by other researchers:

• Can I change the corresponding author at the time of revision?
• Can the corresponding authors and order of authors be changed in the revised paper?

Good luck with the change and the revised submission!