Import any Information from V5 Database into V4?

There is a possibility to import any information from database v5 into database v4? For Exemple Customers or Productlist…?

No there is no way to do that.

Only Customers neither? Need to import customers from V5 into V4

No they did not build a method in v4 to migrate customers from v5. Why are you moving from v5 to v4? That doesn’t seem like a smart move. V5 is vastly superior.