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TC tools are included in upcoming version 17.1. Please let me know what KB Article you looked at that led you to believe that Timberline Convert was retired.
It isn't being retired. The Product you see listed on the article is labeled as retired because it was version specific, and the particular version is old enough for the article to be considered retired. TC is here to stay, and yes it can either be opened from TS-Main (Now TN.EXE in the Shared folder in 16.1) or by running TC.EXE manually.