"VIP Team To Do" and "VIP Task Manager" have different database types, however they can share the same resources. Mind that at the moment it is only "one way sharing", i.e. you can export tasks from VIP Team To Do List to VIP Task Manager, but you can not export tasks from VIP Task Manager to VIP Team To Do List.
For example, you created task 1 assigned to resource A. When you export task 1 to VIP Task Manager for the first time, VIP Task Manager imports the task 1 and creates resource A. Then you created task 2 assigned to resource A. When you export task 2 to VIP Task Manager, VIP Task Manager imports the task 2 and assignes it to already created resource A.