You have the FLECK based RainSoft valve.
By-pass the system, put it in backwash to release pressure.
unscrew the two side clamps on the valve and separate the unit from the by-pass.
Leave the brass connector and the by-pass valve assembly with a warning/ID note.
Remove your complete drain line and unplug the unit.
Unscrew the brine line from the valve.
You are ready to move.
Keep the unit upright at all times.
You can purchase a new upgraded FLECK by-pass assembly and connector for re-installation.