EXOTransportRule - Some array properties are returned as empty even if a value is set

[YenNantes]

Description of the issue

When using Export-M365DSCConfiguration with EXOTransportRule resources, some array properties show no value on the DSC result file while the get-transport rule cmdlet shows that the value is properly set.
I'm using the last M365DSC version and dependencies are up to date.
I have detected the issue at least on the following properties: ExceptIfHeaderContainsWords, FromAddressContainsWords, ExceptIfHeaderContainsWords.

Microsoft 365 DSC Version

1.24.1211.1

Which workloads are affected

Exchange Online

The DSC configuration

Export-M365DSCConfiguration -Components "EXOTransportRule"

Verbose logs showing the problem

For example for the policy below the "ExceptIfHeaderContainsWords" value (I have removed the other properties to keep it short:

DSC result file:
EXOTransportRule "EXOTransportRule-Email Tagging - Unverified Sender"
{
ExceptIfHeaderContainsWords = @();

  }
Get-TransportRule:
Get-TransportRule "Email Tagging - Unverified Sender" |select ExceptIfHeaderContainsWords

ExceptIfHeaderContainsWords
{1}

Environment Information + PowerShell Version

[YenNantes]

It seems that issue was introduced with version 1.24.1127.1.
probably by this change:

I have rolled back to version 1.24.1120.1 and it works well.

[jadamones]

I'm experiencing similar issues as well since 1.24.1127.1 #5500

[ykuijs]

This is indeed cause by this PR, which was released in 1.24.1127.1. Have also found a possible solution, but am now first checking what the rationale was of that earlier change.