GRID HEADS - 3D/2D toggle
Messing around with the grids in your project to get them to NOT be hitting other annotation can often be like opening a 'Pandora's Box'. You move one and they all move or you move one and one moves on another view!
This Revit Tip should bring some clarity to the issues with the Lock, and the 3D/2D toggle on the grids.
(The video of my face freezes for a while (no known reason), but wait for it and it goes back to normal)
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