See the assignment date of a license

VasilMichev 
Hi there!

I hope "reopening" this topic is okay! The provided solution is exactly what I'm looking for, however, it does not work for me. The "AssignedPlans" parameter is not available. If I try to apply it to a user object, it returns just an empty line. Example:

PS C:\Users> (Get-AzADUser -UserPrincipalName fname.lname@domain.com).AssignedPlans

PS C:\Users>

If I run the following command, I get all assigned licenses for the same user, so the command above should return at least something. The .Licenses parameter is useful, but it does not solve my problem regarding the timestamp of the assignment. 

PS C:\Users> (Get-MsolUser -UserPrincipalName fname.lname@domain.com).Licenses
ExtensionData: ...
AccountSku: ...
AccountSkuId: ...
GroupsAssigningLicense: ...
ServiceStatus: ...

Is the ".AssignedPlans" parameter possibly superseded or are my Azure AD rights not sufficient for displaying the data?

Is there another way to get the timestamp of license assignments except for checking the audit logs (since some assignments are older than 30 days).

Some additional PowerShell information:

Version: 5.1.18362.752
Script     1.8.1      Az.Accounts                                                                                                                        
Script     2.1.0      Az.Resources                                                                                                      
Script     1.0.0.0    ISE                                                                                                                                            
Manifest   3.1.0.0    Microsoft.PowerShell.Management                                                                                                          
Manifest   3.0.0.0    Microsoft.PowerShell.Security                                                                                                    
Manifest   3.1.0.0    Microsoft.PowerShell.Utility                                                                                                                                                     
Manifest   3.0.0.0    Microsoft.WSMan.Management                                                                                                                         
Manifest   1.1.183.57 MSOnline 

Many thanks in advance!

Best regards

Johannes