How do you edit toposolids, and keep their shape?

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If you do everything right on the first try, great, but what if you need to change something?

Last time I had a similar question, someone suggested not moving sketch lines but aligning them. That time it worked, but that is obviously on a case by case basis.

How do you edit them, just recreate everything from scratch?

Here's a video of the issue.

[vitorbortoncello]

you must change elevation points to match the split parts

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@vitorbortoncello wrote:
you must change elevation points to match the split parts

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Any easy way to do it?

I thought I'd copy the original toposolid to the same place and keep it as a "base for fixing the edited one", but as far as I can tell you can't snap to the surface of another toposolid.

[vitorbortoncello]

Revit 2025 allows you to snap
https://help.autodesk.com/view/RVT/2025/ENU/?guid=GUID-362E71F1-45FE-41A1-91AA-DC84FE42F6BD

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@vitorbortoncello wrote:
Revit 2025 allows you to snap

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Unfortunately only on edges of other elements, not on their faces, which is what would help to get the edited toposolid to the same points as the one underneath it.