Orion.ADM.NodeInventory.Disable Not Working in SwisPowerShell, Works in REST/SWQL Studio

[martincrothers]

I'm experiencing an issue with the PowerShell module using the Invoke-SwisVerb commandlet.
This seems to be similar to issue #234

I am trying to perform the following:
Invoke-SwisVerb -SwisConnection $swis -EntityName "Orion.ADM.NodeInventory" -Verb "Disable" -Arguments @{nodeIds = @(6414)}
I get a result returned that appears to indicate a successful result:

but it doesn't actually apply the change.

It works successfully if I use SWQL Studio, or even if I perform via cURL/REST:

Attempting it this way causes an error:
Invoke-SwisVerb -SwisConnection $swis -EntityName "Orion.ADM.NodeInventory" -Verb "Disable" -Arguments @(6414)