Structure Desing

Hello. I am a beginner in Catia Structure Design and I have a problem. I received a 3D sketch from my teammate with whom I work now. I wanted to add some pipes using that sketch, I added designated shape to Catia catalogue. The problem is like this: after clicking on any line in that sketch the structure member appears not on the line, but somewhere else. It seems that every selected line is being mirrored by some non-existent point or axis system. It works like this also with point to point option. I tried to add other axis system and make it current, but it didn't work, nothing changed. Do you have any idea what can cause such a behaviour? I am working with Catia V5.