After I've created a sheet metal formed part, I make a drawing for it. If I make changes to the part afterward, the flat will sometimes revert to the formed view and I'm not sure how to update it so it shows correctly in the drawing?
In the part make sure the flat-pattern configuration is flat.
One of the work processes that I found inserting SW Sheet Metal part in a drawing is the view selection order..
1, 2, 3 and 4 selection order don't matter
1. Front View
2. Top View
3. Right View
4. ISO View
and here is the important selection - Always select the Flat Pattern Last
I do always put the flat in last, but sometimes when i make changes to the part the flat in the drawing does not update properly.
Could you upload the part?
Ingvar nailed it. Once you insert your flat pattern into a drawing another configuration is created in your part. if you unflatten it while the "SM-FLAT-PATTERN" is active then your flat pattern in your drawing will be folded. This will drive you crazy (has many) until you realize what is going on.
That said you can fix it by flattening the part while the "SM-FLAT-PATTERN" is active. Do any modifications while the other (default) configuration is active.
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