PBIT files are template files these are used to create templates and don't have any "database" attach so you cannot upload them to the PBI service you can only upload PBIX files that will create a datasource on the web service.
Prior to the January 2019 PBIRS release we could upload .pbix files to the server. We did it as a way to share files. We can no longer do that. Was that functionality taken away with the January 2019 release?
I am trying to upload .pbit file to report server may 2019 and it is throwing an error "Uploading or saving files with .pbit extension is not allowed". But it was working fine with report server Aug 2018 release . Was that functionality taken away ? Kindly confirm.