[Qgis-user] Snapping adjoining existing polygons

[Pat Brown]

I have 2 shape files. One, which has been accurately digitised, contains
provinces. The second one, which has been badly digitised, contains regions
within the provinces. I now need to edit the regions so that their
boundaries snap to the boundaries of the provinces where they are adjacent.
I think something like snap and trace should work but I cannot figure out
how to do this. Can anyone please advise?
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