To Publish an i-model

Select File > Publish i-model.
The Publish i-model(s) dialog opens.
(Optional) Turn on Include Linked Design Files.
(Optional) Turn on Republish all i-models.
Click Publish.
An i-model with an .i.dgn extension is created. For example, if the file name is Test.dgn, the published i-model file name will be Test.dgn.i.dgn.

The file’s location appears in the Message Center.