Lateral Member Resting on Two-Way Slab

In performing an integrity check in RAM Modeler, this warning appears:

The High Roof level consists of columns, a 1-way 6" slab, and beams.

The Level below consists of beams, columns, and a 2-way 12" slab supporting the High Roof columns:

The warning occurs for High Roof columns 1, 2, 3, 5, 7, 9 ,11, 13, 15, 17, 19, and 20. These columns had their fixities defined as such:

The fixities highlighted in yellow represent the columns that land on beams, pinned at the base and fixed at the top. The white fixities shown are 2-storied cases (High Roof and Roof levels) attempting to utilize the continuous columns for lateral resistance for the High Roof but not as a lateral resisting system for the building as a whole.

Questions:

The beams shown in the images above are designated as Lateral, but have their fixities modified to be pinned at each end. Given the wording of the Warning, it appears the program interprets these releases as making the Lateral member "Gravity" when running the Integrity check. Does this warning have any merit for the given situation?

The fixities of these columns were required for lateral analysis to limit instabilities at nodes on the High Roof. Do these fixities capture the proper intent or is there a better modelling practice to capture this? At the base of all the columns going to the foundation, there are 4' tall 24"x24" plinths, these connect the columns to the spread footings. To solve an instability issue their fixities were maintained as fixed-fixed, with all other columns (Lateral) set to pinned-pinned. Does this also merit revision?