Assign selective license in Office 365 using Powershell - "Unable to assign this license ..."

Hi,

let's assume I want to only change the ProvisioningStatus of one ServicePlan and a

user has the following ServicePlans set ((Get-MsolUser -UserPrincipalName $user).Licenses.ServiceStatus)):

ServicePlan ProvisioningStatus
----------- ------------------

YAMMER_ENTERPRISE Success
OFFICESUBSCRIPTION Disabled
SHAREPOINTENTERPRISE Success

I want to set YAMMER_ENTERPRISE to "Disabled"

So I tried:

$licenseOptions = New-MsolLicenseOptions -AccountSkuId "companyname:ENTERPRISEPACK"
-DisabledPlans "YAMMER_ENTERPRISE"

Set-MsolUserLicense -UserPrincipalName $user -LicenseOptions $licenseOptions

What this does is set YAMMER_ENTERPRISE to "disabled", as expected. However, OFFICESUBSCRIPTION will now be enabled. I know this is because any ServicePlan not specified for -DisabledPlans will be enabled.

Is there an option to have every ServicePlan remain unchanged but desired one (here YAMMER_ENTERPRISE)?

I'm asking because if I wanted to automate this for a whole tenant it'd be devastating if all ServicePlans not specified for -DisabledPlans got enabled beacuse many times different users have different combinations of ServicePlans enabled/disabled and the should remain unchanged.

Thanks for your help in advance.