"Freeze/Thaw in Current" layer states not restored via command line options

Hi There:

I am trying to create a small tool button macro that will restore "Freeze/Thaw in current viewport" layer states in an active viewport on a layout.
I have tested the command line options manually and, when trying to use the command line option to restore "Freeze/Thaw in current viewport" layer states nothing is restored.
I am using a basic layout. The viewport is current. The current layer state is saved via the Layer States Manager dialog. "Freeze/Thaw in Current Viewport" is checked on in the options for the Layer States Manager.
When restoring a "Freeze/Thaw in Current" layer state from the Layer States Manager dialog it restores fine. When using the command line options it does not restore the "Freeze/Thaw in Current Viewport" states. On/Off or Frozen/Thawed states do restore from the command line options but not "Freeze/Thaw in current viewport" states.
The macro is as follows:

^C^C-layer;A;R;(getvar "CTAB");;;_REGENALL;

(btw - the Named Layer State is already saved with the same name as the Viewport so the (getvar "CTAB") is grabbing the right Viewport & Layer State name).

I originally tried the loswitch.dvb from dotsoft.com.
This uses the same procedure and still does not restore "Freeze/Thaw in Current Viewport" states.

Any ideas or suggestions as to why the command line options might not work with "Freeze/Thaw in Current"?

Thanks in advance for your time and help.

Regards,

Alex Wood