Problems with the Europe_Truck map

They don´t work in same time.:
- Navcore original 9.510 in internal memory in device only works when micro sd is put off. Then, the device starts from internal memory with 9.510.
I use it to drive my car.
- Navcore Truck 9.702 in external micro SD card, only work when micro sd is put in device. Then device starts from external micro SD with 9.702.
I use it to drive my motorhome or camping car.
Until now I change the start device only having the micro SD, in or out at device and restarting it, always without any problem. When de device restart in one concretly way and navcore, other one is as not existing.