Publish i-model 1.6

Yes 1.6 has been removed from the interface. However if it is still installed you should find a folder: "C:\Program Files\Bentley\ItgDgnDbImporter 1.5"

There are PDF with how to publish to 1.6 or 2.0 out of the application. 

Thanks JP, I did manage to get the conversion to work.

Do you know if there is a way of representing an imodel 2.0 file in tabular form in either excel or access?

You can still use imodel odbc 1.6 to extract information from the i.dgn that is always created even if you publish to imodel 2.0
https://store.bentley.com/en/products/iware/1000IMODBCD--iModel-ODBC-Driver-16

imodel 2.0 is SQLite database. I am not an expert but it does allow many things.

Then we also have the https://imodelconsole.bentley.com  to extract information from published imodels (itwin services level 3)
We can even use Power BI to read from an imodel.
There are probably some webinars about it.
This one should give a good idea: Bentley webinar: How to Query Digital Twin Data
https://www.bentley.com/en/global-events/events-overview

You can search the title I indicated above or even just imodel

You can still use imodel odbc 1.6 to extract information from the i.dgn that is always created even if you publish to imodel 2.0
https://store.bentley.com/en/products/iware/1000IMODBCD--iModel-ODBC-Driver-16

imodel 2.0 is SQLite database. I am not an expert but it does allow many things.

Then we also have the https://imodelconsole.bentley.com  to extract information from published imodels (itwin services level 3)
We can even use Power BI to read from an imodel.
There are probably some webinars about it.
This one should give a good idea: Bentley webinar: How to Query Digital Twin Data
https://www.bentley.com/en/global-events/events-overview

You can search the title I indicated above or even just imodel