Perpendicular Dimensions, Intersection Symbols & curve approximation.

[Circa76]

Hello.

Here is a frustrating scenario.
[ul]
[li]NX 7.5 in Drafting[/li]
[li]A view is added onto a sheet.[/li]
[li]A number of Perpendicular Dimensions and Intersection Symbols are required.[/li]
[li]First pick required for this type of dimension is Linear Edge but the selected features are compound curves thus this operation can not be completed.[/li]
[li]Work around is to go into View Depended Edit and Simplify Curve. This approximates the compound curves to a series of short lines.[/li]
[li]After leaving the View Depended Edit, now the required Intersection Symbols and Perpendicular Dimensions can be placed via the approximated curves.[/li]
[li]Here is where it gets a bit flaky.[/li]
[li]After any minor update to the model that is not even remotely related to the edges where the curve approximations were created these dimensions and intersection symbols loose association.[/li]
[li]To add insult to injury the Intersection Symbols can not be re-associated after they loose the association which means that I have to delete them, then re-apply and reattach the dims.[/li]
[/ul]

Here are the example showing the dismenioned view and one with lost association.

What am I missing here???

 

[Circa76]

I noticed that the images didn't attach in my initial post. Hopefully this works.
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