What version of enterprise are you publishing to? Did you publish a hosted vector tile layer from the package?
Please see the following documentation for more information: Manage hosted tile layers—Portal for ArcGIS | Documentation for ArcGIS Enterprise
10.6.0, and yes: Vector Tile Package uploaded, and published to a hosted Tile Layer. I just cannot find the "replace" option in Portal. I am able to do it though AGOL just as described in online help files, but not in Portal.
I think the problem might be that the documentation is not separate for 10.6.0 and 10.6.1 and the replace functionality doesn't come into play until 10.6.1. :( got any tips on a workaround until I can upgrade? I will be researching!
Thank you for your help Jonah!
There is an inconsistency in the way this is implemented at 10.9.1.
If I use Pro > Share > Publish a web layer and then configure it to copy all data to portal, make me a vector tile layer and an associated feature service I get NO replace layer option when looking at the item in portal.
If I use Pro > create vector tile package then share the package and publish it I DO get a replace layer option.
@DavidWatkins is this by design?