[Bigkronk]

(I think...) With OmniPlan 1.5 beta1a, you need to set up your filters under View -> Filter Tasks... The release notes mention that Exports will adhere to any current filter.

Feature Request: Ability to "save" multiple filters.
It would be great if I could save multiple filters for a project instead of having to constantly having to redefine the same one. The expected functionality would be similar to Smart Playlists in iTunes or saved "Search For" items in Leopard - in the Finder window sidebar.

It would be great if these Saved Filters had their own Inpector.