Since it became a rental, there has been ZERO personal days.

The number of personal days versus rental days is to prorate expenses for a property that goes back and forth between personal and rental use.  For a property that has been converted to 100% rental use, you only enter any personal days AFTER it was converted.

I don't use Lacerte, but in ProSeries you need to MANUALLY prorate expenses like mortgage interest and real estate tax for this first year.  You may want to check if Lacerte is the same.