change A records and host site


Not sure if this is the best category for this question but please advise if necessary

I am parting company with my web design company and wish to host my own site.

Couple of questions:
1 I have full admin control of my site. I have a hosting package ready. Do I just need to transfer A records. (ignore email as this is already set up through google)

2 Do I need to re submit the site through google etc.

3 Assuming the new code is compliant, what SEO issues may arise for the change. (in brief)
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topUKlawyerAuthor Commented:
The code for the replacement site is not the original code as developed by the software company. It is my code.
It's not really clear who is the real owner of the domain (domain name is paid by person xx), and where it's registered and who controls it ( ? etc) ?
Because issue 1 suggest you are the owner and want to keep the same domain name, but issue 3 suggests you want a new domain name (there are no SEO issues if you have the same domain) ?
topUKlawyerAuthor Commented:
I am the owner of the domain. Its registered to me on a registrar and I have control of the control panel etc.
The hosting points away from the registrars company to a third party hosting set up by the web company.

I wish to keep the domain name which is mine.
Then it's easy. Put the files on the new server, change the DNS entry to point to that new server. No need to do any search engines stuff, as the crawlers look it up by domain name, not by IP address.

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