Is latitude and longitude returned?

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When I started this project, LMD_MP_Latitude and LMD_MP_Longitude were not returned with the data queries. A few days later I noticed a change in data schema and lat/long were now getting returned with the data.

I noticed LMD_MP_Latitude and LMD_MP_Longitude are now empty again.

Can I get some insight? Is lat/long suppose to be returned? is it reliable? Am I missing a parameter in my query? This is a standard query for importing listings based on L_UpdateDate and returning all fields.

Thanks