Harvest with the Data class
Go to MANAGE > Configuration, select the Data Lake model and go to the Import Options tab. Note, this model is defined for Data Profiling and Sampling.
Click Import and be sure to check FULL SOURCE IMPORT INSTEAD OF INCREMENTAL to ensure that the cached copy is not simply reused.
Once the import has completed and the data profiled and samples (check the Logs tab), We will see what was profiling and auto tagged (and thus auto hidden).