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Part history error
dave_petrillo550
Member Posts: 1 PRO
Today I encountered a strange issue with part history. To baseline, I am proficient with onshape, use it professionally, and am the admin for my company for the time being. I have a fairly complex document that I have been working in for some weeks. Today I spent part of the day working on one part studio, building it out from a few features to a few dozen. Early in the part studio there was a defining sketch that was simple, it used the edge of a surface and no other information. After some time, the part was complete and I stepped away. When I returned later in the day, the feature tree was broken and the sketch high in the model tree was broken. I started to look back in the history to find what had broken it and noticed that I could not locate any time when this sketch was not broken, and most of the features after it also broken, right up to the time in was first drawn. The problem is, that is not what happened in reality. In reality, this sketch was never broken, it was driving the geometry I worked on most of the day, and I did not spend any time working with any broken features. The development of this part was fairly linear. No other people made edits to the document either, throughout the day. The issue with the sketch was very simple, there was one failed external reference, deleting it popped it back to a solved state. The history for this part studio, however, does not actually reflect reality and shows this part broken all day long. Thought this was strange as history should be an immutable reflection of what happened in the document, but in this case I'm nearly certain that it was not.
Answers
You could possibly have changed or updated a model up the history tree. Sometimes, even without any changes to the actual geometry, making a new version can make a difference depending on the references used. This may then come as a surprise somewhere downstream.
@dave_petrillo550 please file a support issue and share the document with support, if you can.("?"→ contact support). This sounds like an issue on Onshape side.