@Anonymous wrote:
This is a video. When demonstrator return to assembly orange part is moving downwards. In my one orange part is remaining at the same position. Why?
Time around 10:00
https://www.youtube.com/watch?v=3yglHbaBHCo
In this thread, we learned a preferred order of projecting geometry.
Here is a repeat of the list from that thread.
1. Project only the Origin and use that for all reference.
2. Project endpoints of sketch lines as needed.
3. Project sketch lines or circles as needed.
4. Project part edges.
5. Project part faces (loops) or cut edges.
6. Cross-part projection in assembly.
It was stated that beginners should be using only 1,2 or 3 and if they felt compelled to use 4,5 or 6 they should first come here and ask questions.
In you part created in the assembly you used #6, the least preferred technique (for a beginner) of projecting geometry.
I watched the video link you gave above, and at no point did I see the presenter suggest that you should use Cross-part projection in an assembly (Adaptivity).
Write out the list of 1-6 above on a sticky note and place it on the screen over top of 
then anytime you go to use the tool - first review the list and then you can flip the note up or come here and ask question about the correct Projection to use.
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