Conduit parameters are not applied to importet conduits.

Jan:

A couple of notes:

First, when extracting utilities from graphics the minimum bending radius does not apply.  The extract graphics command was designed to make a utility model which matches the graphics,  with the underlying assumption that the graphics represent the surveyor's or designer's best depiction of the horizontal and vertical position of the utility. The model is not adjusted to match any minimum radius defined in the feature definition.  If the radius is required then the radius must be either built in to the original graphics before extraction or added into profile after extraction by editing or replacing the profile.

Second, the minimum radius setting does not drive the utility model like design standards do, the minimum radius only monitors the result and flags errors. And, unfortunately, even this part seems pretty unreliable.

Based on your question I am assuming that the desired result you wish is that the utility profile will always be at or below the minimum cover and with radius bends instead of vertices in the profile.  Your questions indicates that the minimum cover is not always satisfied, but I am not sure I understand what you mean by "..whenever the line crosses the terrain model...".  If the utility becomes too shallow in some places then this is obviously a problem.  

To get smooth radius bends in the profile you will need to edit the profile or design a new profile with the vertical curvature you desire, then set the new profile as active. In this regard, you need to also be aware of how the minimum bend radius works in conjunction with the joint length in the feature definition.  If the joint length is non-zero then any vertical (horizontal too) curvature will be stroked by the amount of the joint length.  So if you want smoother vertical curves then make sure joint length is zero.

Jan:

A couple of notes:

First, when extracting utilities from graphics the minimum bending radius does not apply.  The extract graphics command was designed to make a utility model which matches the graphics,  with the underlying assumption that the graphics represent the surveyor's or designer's best depiction of the horizontal and vertical position of the utility. The model is not adjusted to match any minimum radius defined in the feature definition.  If the radius is required then the radius must be either built in to the original graphics before extraction or added into profile after extraction by editing or replacing the profile.

Second, the minimum radius setting does not drive the utility model like design standards do, the minimum radius only monitors the result and flags errors. And, unfortunately, even this part seems pretty unreliable.

Based on your question I am assuming that the desired result you wish is that the utility profile will always be at or below the minimum cover and with radius bends instead of vertices in the profile.  Your questions indicates that the minimum cover is not always satisfied, but I am not sure I understand what you mean by "..whenever the line crosses the terrain model...".  If the utility becomes too shallow in some places then this is obviously a problem.  

To get smooth radius bends in the profile you will need to edit the profile or design a new profile with the vertical curvature you desire, then set the new profile as active. In this regard, you need to also be aware of how the minimum bend radius works in conjunction with the joint length in the feature definition.  If the joint length is non-zero then any vertical (horizontal too) curvature will be stroked by the amount of the joint length.  So if you want smoother vertical curves then make sure joint length is zero.