File conversion question

I had in mind the new version of iRhino3D that no longer allows saving in Rhino7
The steps are:
-1. scanning in iRhino3D
-2. saving in Rhino8 as it is not possible to save in Rhino 7 (initially it was a problem with saving texture in Rhino 7 but it was solved. See this thread: Display texture on desktop - #12 by mkarimi)
-3. share in Google Drive
-4. use Convert3DM to convert from Rhino8 to Rhino7
-5. opening converted file in Rhino 7 - the message from the attached image is displayed


-6. click ‘Remove’
-7. open the converted file - this is displayed without texture - see post no.1