tbp is not a supported format on the Trimble Connect Desktop application.
According to this update, TBP is supported. Trimble Connect Desktop - v1.6 Release Notes
If you guys are taking BIMsight to EOL, there had better be a way to view a TBP. We have a user currently struggling with this. Ankit Sulodia
Drag a drop a TBP file into the Connect project library:
As Joshua mentioned, TBP files can be dropped to project library in Trimble Connect Desktop.
Please note: As Trimble Connect accounts are different from Tekla BIMsight, we cannot import all data to Trimble Connect. You should get models with placements and also other files from the TBP.
Retrieving data ...