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Sheetmetal corner "error"

I have a sheet metal model on which I have changed the edge connections. If I want to add a sheet metal tongue before or after, the corner of the sheet metal model always jumps over and opens.
Is there a way around this?
Best regards,
Axel Kollmenter
Axel Kollmenter
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Answers
@Eugen
Axel Kollmenter
Hmm… Sheet metal can be temperamental/stubborn for stuff like this…
Looks like if you move the face of the right flange up above the side tab first, you can then create the side tab first, then extend the other face again (with a tab, move face doesn't work…). The other odd thing is that the "modify joint" needs to be after the sketch for the side tab, otherwise it doesn't work and I'm not sure why…