Most of the time any changes that need to be done on upgrade are database related. Core files can be freely swapped pretty much. WP keeps track of this by comparing db_version option (stored in database) against the current value (from core files) on admin load. If there is mismatch it runs the upgrade routine … Read more
Media upload via backend doen’t work after moving site
Migrating October CMS to WordPress
See Codex for running a development copy of wordpress. You can make all the changes you want on the blog without affecting the production site by testing out new themes/etc which is what it seems like you’re looking to do. http://codex.wordpress.org/Running_a_Development_Copy_of_WordPress#WordPress_2.7_-_3.0
Actually, I just figured it out. In the migration, the settings were slightly different in the “Add This” plugin. I had selected “Track address bar shares” which added the # and the characters for tracking purposes. That is now removed.
blogs.dir isn’t used for multisites created after WordPress 3.5. Instead everything exists in wp-content/uploads.
use WordPress export option and after that use import on the second site How to Export and Import a WordPress Blog
I believe a multisite solution + WooCommerce plugin (which is multisite compatible) would answer to the specifications you have listed. About the multisite installation I strongly recommend you to read: https://codex.wordpress.org/Before_You_Create_A_Network https://premium.wpmudev.org/blog/how-to-build-a-wordpress-multisite-network-with-multiple-domains/ As explained in the tutorial above, you can set different domain names for each of your sites, it just requires an additionnal plugin … Read more
You could export all of the posts from your old site, including comments. Then, import them into your new site and delete the posts you don’t want. This will preserve all of the links between posts and comments.
You should use a sitemap module to generate a list of URLs created by XOOPs [e.g. xSitemap]. Then you have to set up your .htaccess to 301 redirect each URL to its corresponding page in the new WordPress instance. Finally, you should consider installing a WordPress plugin like Redirection to check for 404s and redirect … Read more