Different Sheet metal flatten after Adding Miter Flange

[Tera]

I have added two Mitter flange to a sheet metal part, then mirrored it to have the same thing on the other side of the part. (Colored face in following image)
When I flatten the part, the mitter flange and mirrored section, show different.
Can anyone advice what I'm doing wrong?

Thanks.

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[Frank_Oostendorp]

After changing the feature sequence, and copy only one item a time, the flat pattern looks o.k.

And repaired a small detail.

So you need to keep it simple.

[Tera]

After changing the feature sequence, and copy only one item a time, the flat pattern looks o.k.
image.png
And repaired a small detail.
image.png
So you need to keep it simple.

I wonder why one at a time makes any difference.
I don't have SW at home. I'll check as soon as I'm back to my desk (8 hours from now)

Thanks for you time and help.

[Tera]

@Frank_Oostendorp
I Deleted the mirror feature, and mirrored each individual miter flange separately.
The flat pattern seems to be OK now.

Thanks for your help and taking your time to look into this.
I will keep the thread open to see if anyone else has any idea why mirroring several feature together, causes this.
I will accept your post as the solution later.

Thanks again.