false APRS-Data from "GD77" with OpenGD77-Firmware

[DG0LFL]

I have some questions about APRS in "GD77" (or compatible) with OpenGD77 -
I would like to realize the following:
I want to transmit to the DMR+ network with PC9059,
and I want to send to the BM network with PC262999.
For this I have created the appropriate digital contacts in the CPS, and TalkerAlias "APRS" activated.
It works fine in the BM network with PCxxx999, the QTH is correctly listed in aprs.fi with the identifier -9.
However, this does not work with PC905x in the DMR+ network, here wrong coordinates are listed.
(e.g. Cameroon/Niger ... instead of Germany)
I also have the feeling that 9059 is not dialed here, because I get back a "Red Dot" identifier, without "-9".
My remote station is my own hotspot, which is properly registered in DMR+ and BM.
How can I send correct data to DMR+ network, so that it will be displayed correctly in aprs.fi!

edit:
"GD77" -> Hotspot -> BM ... OK
"GD77" -> Hotspot -> DMR+ ... NOK (Latitude false)
"GD77" -> Repeater -> DMR+ ... OK
"GD77" -> Repeater -> BM ... OK

Also we have a suspicion that a PC905x is not sent out from the hotspot to the DMR+ network!
An APRS counter test with an AnyTone worked however also at the Hotspot via DMR+! (listet on Pi-Star as "DMR DATA" ... is this APRS-SMS?)
Roger from openGD77 say: DMR+ can not ETSI In-Call-Data, and OpenGD77 can only ETSI!

[DG0LFL]

@pistar-dev's:
no answer,no help?
is pistar 4.1.x not ready for etsi incall on dmr+ network?
or what is the Problem?