Export Table definition and Custom Columns to another PBIX

Hello v-yuta-msft 

Thank you for your reply. I followed and read the link provided, somehow informative (I knew some of the info presented there).

However, it doesn't asnwer my  question/issue... I am afraid you haven't read my context, or I haven't explained my self well...

I do not want to export everything... I am managing an "official" PBIX and someone else has created ONE table (as part of training/induction), with a lot of calculated columns that eventually we found useful and decided to include inside the official .pbix.

So, I would like to export that table (or 2-3 for that matter, but not all 50+) definition, in order not to rewrite the DAX or copy-paste by hand between the 2 pbix files... Conversly, i might want to give him some additional work, ie 1-2 new tables, withouth resharing the whole file, especially as he might have done its own definitions.

I've also looked inside the pbit as a zip file, reading DataModelSchema as a json, but can't find a straitforward way to locate/isolate that table definition.

So, to summarize, I was looking for Export-Import as with the templates, but for a specific table definition with all its custom fields.

Many thanks,

Cristian