Error refreshing Composite model live connection to Power BI dataset

I am facing the same issue has many of you.   I have a composite model.   I am then building another model (from that composite model).    I tried replicating the main model's date table using create new table because I wanted to test something, and I started getting this refresh error.   I deleted that calculated date table (the one I was trying to replicate, not the original one from the direct query table in the source model), and sure enough, my model refreshed perfectly.    They say the composite models are the way of the future...but man are they a headache when compared to the simplicity of a pure import model.