Sony gen 1 + 2 bodys can transfer RAW to mobile to the Imaging Edge app (use in conjunction with the in camera remote control app in latest version on the body).
That is not true and never has been true. IEM (nor its predecessor PMM) have ever been able to transfer raw files - it isn't an app limitation, it's a camera-side limitation. NOTHING can pull a raw file from a Sony E-mount camera via wifi. Not from A6000, not from A6300, not from A6500, not from A7M3 unless you use the poor workaround of FTP hacks which are inferior in workflow/usability to even Sony's horrible IEM app.
There are several ways to do it once its set up, I have the A7C. And it is effortless to get the images to my device once its set up.
1. On your camera turn of Send to smart phone and control with smart phone.
2. Connect your camera and smart phone to the same wifi. It can be the same wireless network if you are inside or it can be the hotspot if you are in the field.
3. Start up and configure Sony's Transfer and Tagging app. It will give you the FTP IP, username, and password to use.
4. Configure one of the ftp servers on the phone using the information you received in 3.
5. Select whether you want to ftp as you shoot, (This is what I use and I don't have to think about it) whether you want to upload RAW, JPEG or RAW+JPEG.
6. Take your pictures and watch them download to the app.
From there I either do a quick edit and share, upload the pics to Amazon, or print it out on my fuji instax printer. I would also add that you can FTP directly to your computer if you can access it via the internet or once you are in your home. Its pretty slick...
Good luck with it.