Hi,
As far as I know, yes, Google will udpate its links to use the new ones. I don't know how long that takes, I have very little SEO experience. Hopefully someone else here can let us know more please? :)
As for the sitemap, I don't see why you shouldn't just resubmit it anyway, but again I have experience of this, I've never used one before.
As I said, hopefully someone with knowledge of these areas will comment.
All the best...
Conor
ceon
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