The web team at my company has been and is continuing to work on revising our website. The revision is going to be a major one and as such, we aren't really able to update/revise the site in bits and pieces.
We are creating the new site using CSS: we plan on completing all the changes and then will upload all the pages and revisions at once. Due to the infrastructure changes of the new site, some of the pages that are on the current/old site will need to remain on the new site but will be 301 redirected until the SEs are aware and have indexed the changes.
From what I've read a change of this scale will draw the attention of the SEs. My question is...is the method we are going about to make the changes the best way to do so?
- I've read that others have had their site disappear from the SE results until their site has been reindexed...will an instantaneous switch from the old site to the new one leave us at the mercy of the SEs to reindex us with the changes?
- Is setting up 301 redirects the best way to pass the optimization of the old pages that have been indexed and rank well, to the new pages that will replace them?
- Lastly, for anyone that has gone through something similar to this...approximately how long did it take for the SEs to see and reindex your revisions?
Thanks in advance!