Date dimension reachability in Tabular mode

I'm recreating my multidimensional cube in Tabular mode.
My primary entities are Invoice and Shipment. Shipment being all the items that were shipped with a carrier and billed on a particular Invoice. Every Invoice has a Billed Date. A common query pattern is to use Bill Date when filtering for Shipment
Fact aggregration. In multidim, the date gets associated with the Shipment facts by going through Invoice.
How do I do that in Tabular?
How Multidim is setup:
The output of Tabular:

Hi Vince,
Thank you for your question.
I am trying to involve someone more familiar with this topic for a further look at this issue. Sometime delay might be expected from the job transferring. Your patience is greatly appreciated.
Thank you for your understanding and support.
Regards,
Charlie Liao
TechNet Community Support

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Date dimension reachability in Tabular mode

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