AutoCAD Civil 3D :: Prevent 3D Faces Objects When Exploding An Alignment Tangent Label

I received a drawing where I have to add Bearings to an alignment and Right-of-Way lines. I have a Line Label Style that it works for that purpose. These new bearings are "Alignment Tangent Labels" and we need them to be "MTexts"

Select & explode once, and you get "Block Reference"

Select & explode again, and you get "MText"

Once that is done, unfortunatly, I get "3D Faces" objects in the background. Invisible on the drawing, but visible on paper once we plot them. The only way to remove them is by selecting around the new MText until I click on one, then, right-click, Select simnilar, Delete!

Is there any way to prevent that to speed up the process???