Transfer student between groups and keep workbook progress

Hello, I need some help with managing a student between groups.

I need to move a student from one group to another group, but I want the student to keep the workbooks they have already been working on.

From what I see in the system, if I delete the student from the current group, their assigned workbooks and progress also disappear, and then I cannot track their previous work when they join the new group.

Is there a way to move a student to another group without losing their workbook assignments and progress, or a way to transfer their workbooks to the new group?

Thank you for your help.