Change differential pair dimensions of existing board

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1

I have a fairly large existing and working board that I want to manufacture on a different stackup.
This stackup has defined impedances that are different from the ones it was originally manufactured on.

Is there a way to adjust the differential pairs without manually rerouting the whole board?
I can adjust the net classes of course, but this doesn’t change existing traces.

I produced some prototype boards and they work fine, just… somewhat out of spec I suppose.
Part of me says “if it aint broke don’t fix it”, part of me is slightly uncomfortable with high speed connections being out of spec.

2

If you update the net class values, it won’t automatically change anything but if you user “Edit->Set Track and Vias Properties” with “Set to net class/ custom rule values” and a combination of filters (By net, net class, layer, etc).

I hope this helps.

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