The existing project levels should be retained because the preset floor plans, reflected ceiling plans, and other level-associated views already placed on sheets depend on them. The BIM manager should align those levels with the authoritative as-built levels and then establish monitoring where appropriate. The linked grids can be created in the host through Copy/Monitor, providing native project grids that correspond to the resource model.

Deleting the template levels would also delete or disrupt dependent views, resulting in precisely the extensive sheet and view reconstruction the question requires the BIM manager to avoid. A Scope Box controls datum extents and view cropping; it does not reconcile level elevations or create coordinated grid elements. Hiding the host levels and displaying only linked datums would leave the host project without properly coordinated native reference elements and would not support reliable modelling or documentation.

After alignment and copying, the team should review Copy/Monitor warnings whenever the linked as-built model changes. This preserves the firm's established documentation infrastructure while integrating authoritative project-specific datum information.

Reference topics: Copy/Monitor; level-associated views; linked as-built models; grid coordination; Revit template reuse; datum management.