Disappearing definition sketch on section view in an Inventor Pro. 2020.1 .dwg drawing.

[Powerman2000]

Hi.

I have an issue that while working to create a Inventor drawing, working with Inv. Pro. 2020.1, I experience that the section view position definitions is disappearing during drawing creation, ref. picture 1 & 2. The actual section views is still in place on the different sheets in the drawing, it is just the position definitions (A, B, C and D) on the "mother" view that disappear (the sketch for the section view is still in place and showing in the browser).

The workflow is that I started a new drawing template, I positioned out the main mother view on the drawing sheet 1. Further I put on several section view on the mother view. The section views is moved to sheet 2 and 3. I further continuing detailing the views on sheet 2 and 3. When I then went back to sheet 1, I experienced that the section view position definitions was missing, still all section views still was in place on sheet 2 and 3.

[SBix26]

If anyone wants to try to reproduce your results, they will need to have some files to work with and to know what version of Inventor you're using.

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Sam B

Inventor Pro 2022.2 | Windows 10 Home 21H2

[Gabriel_Watson]

You're not describing how you did "create an Inventor drawing". Are you copying the views onto a new file/document altogether, or do your sketch lines (created when you set the section view) get deleted right after placement in a new drawing made from scratch? What is your workflow? Any samples you can share?

A similar issue has been fixed in the 2019.2 update, so, knowing your software version matters too:
https://forums.autodesk.com/t5/inventor-forum/inventor-2019-sketches-disappearing-from-drawing-when-...

[Powerman2000]

Hi.

Thanks for feedback.

I have now updated my case with more details.

Related to files, I have fixed my drawing and it works fine now, but do you still think it would be useful to share a file package including the drawing and part/assembly files?

[Powerman2000]

Hi.

Thanks for feedback.

I have now updated my case with more details.

Related to files, I have fixed my drawing and it works fine now, but do you think it would be useful to share a file package including the drawing and part/assembly files?

[SBix26 · Accepted solution]

If you've fixed it, then I don't think we need to pursue it further.  I note, though, that you are using a pretty far outdated version of Inventor 2020.  You need to apply update 2020.4, followed by update 2020.4.3.

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Sam B

Inventor Pro 2022.2 | Windows 10 Home 21H2

[Powerman2000]

Hi.

Thanks for feedback.

I agree that it would be useful to update to service pack 4.3 and then monitor if the issue happens again.