As Deva says this should not happen, so it should be reported to Aveva. Be sure to attach enough data for them to reproduce the error in the APS project if you do send in a bug report.
Hei Tejas, I've missed that one. This solved the issue. Tnx! :)
One more question to ask while this post is still active. I've noticed that chained center line of pipe is not up to scale with the view-its losing its proportion when drawing is not in 1:1 scale.
Is it possible to control line scaling in view to keep its proportion in accordance to view scale?
Tnx 2 all!
Update: Linest option with view local rule set for pipes to use user defined center line is one of the solutions for this