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Error when doing extrude remove through a partial flange

in General
When I try to do an extrude remove through this sheet metal part with a partial flange, it doesn't work, as per the first image.
When I make the flange a full flange, it works normally.
I'm not changing anything except checking or unchecking the Partial Flange option, and when Partial Flange is selected, the extrude feature fails.
Is this a limitation of the partial flange feature, or am I doing something wrong?
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Answers
I don't know much about sheet metal models. Maybe making a new part and then immediately Booleaning it might fix it, in 2 different steps
Extrude 4 fails in my sample because it is trying cut along the edge of previous bend, Unless you have a special tool setup for this it will fail on the break. Might as well make sure the bend is completely removed or a some away from the bend.