Steps To Take Before Switching Your WordPress Theme
Changing your WordPress theme will not delete any post or page data, but there are still a few steps you’ll want to take before you make the move.

-
EDIT OLD POSTS TO REMOVE SHORTCODES FROM YOUR THEME.
-
Shortcodes added by your theme Won't work when you switch to a new one. Remove them from old posts and page.
-
CHECK YOUR WIDGETS: BE PREPARED TO LOSE ANY FROM YOUR THEME.
-
If you're using any widgets from your theme, you'll lose those in the move. Be prepared!
-
BACKUP ANY TEXT WIDGETS
-
Sometimes widgets can randomly disappear during a move. Make Sure you backup any you can’t easily replace.
-
PUT YOUR SITE IN MAINTENANCE MODE
-
Make your site only accessible to you so you can work through the transition with privacy.
-
READY... SET... GO!
-
You're ready!