Lightroom Classic/Lightroom CC: GPS data lost between applications - workflow becomes to complex

I'm with my second batch of importing / uploading etc

I've discover a problem, probably because of RAW/NEF photos. Maybe because GPS data are not embedded in file? :

Because after 3 months I'm always not sure I can use or not LR classic to upload real pictures in cloud I have to use the very weak / limited Lr CC.
Here my concern :
It seems when uploading to LR CC a full 20MB is send to the the cloud with GPS data. I can see it and sometime not.
Then because LR classic and LR CC does not communicate, a full 20MB raw (NEF) copy is send to LR classic. But without GPS data.
Send I need to manually enter GPS data. 
Then I need to select manually
Than I need to ctrl-S to save the GPS data.
Then a full 20MB is send again in the cloud.

Is it a limitation (once again)
Is it a fail from me?

What do I'm suppose to do?

regards