I can't seem to properly transfer .rsc file to device. When I perform:
upload hangs at 100%. If i interrupt it and try to import file it fails with
When I download uploaded file back to PC it has 1 additional line at the beginning:
Also some lines near end of file are missing

I can scp a rsc file back and forth just fine.

Is there enough disk space on your RB? Lack of disk space would explain missing tail lines. Not the extra head line though ...

It seems to be caused by fish shell for whatever reason. When using plain bash, scp to MikroTik works fine