Transfer and synchronize grid elements between Revit and Advance Steel using the option in the Settings dialog.
The Export grids option in the Settings dialog allows you to transfer grid elements when starting a new project. This is a checkbox option and by not checking it, you can choose not to take the grid elements into consideration in the following synchronization iterations, when the focus is no longer on the basics of the structure.
Grids are conceptually different between Advance Steel and Revit. In Revit, grids are vertical planes while in Advance Steel are lines (most commonly horizontal and vertical), but they can have any position in space. In Revit, grids have a unique label within the model, while Advance Steel allows duplicate labels. Revit treats each grid axis individually, Advance Steel allows you to model both individual axes and sequences of grid axes.
Revit allows view-specific extents to grids - this means that grids are visible or not visible in Level views, depending on their extent in the Elevation views. In Advance Steel, a grid axis is just a labeled line which is always visible in the model (if the grid layer is turned on and if the Representation of the grid is not turned off).
The transfer and synchronization of grids will keep the grids grouped in a sequence, if they are modeled like this in Advance Steel. If the grids are modeled with single axes, in Revit or Advance Steel, then they will be transferred and synchronized individually.
Grid axes added in Revit will not be included in any grid sequence when transferred or synchronized in Advance Steel. Revit will export grid sequences only if they were imported from Advance Steel this way.
Revit will only export grid axes on Base Level - Elevation 0. Grid axes from other levels will be projected on the Base Level - their projection will be verified to coincide with the axes from the Base Level. If the projections don't match, they will be labeled differently.