301 redirects from one subfolder install to another

Need help with 301 redirects from one subfolder install to another subfolder install — all on same domain/server. (This question is ultimately about out how to handle 301 redirects to keep them friendly for Google in this situation.)

I have 301 redirects from an old html site in root folder to an original wordpress install in subfolder (Eg. “Subfolder-A”) on the same domain. No problems there. Standard stuff:

Redirect 301 /old-widget.html http://mydomain.com/new-widget/

Note, however, that the above is *not* redirected using the name of the subfolder, like so:

Redirect 301 /old-widget.html  http://mydomain.com/Subfolder-A/new-widget/

Since the .htaccess file uses ReWriteBase, it wasn’t necessary to have the subdirectory in the URL… at the time:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /Subfolder-A/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /Subfolder-A/index.php [L]
</IfModule>

SO…… I needed to do another WP install to revamp the site design completely while keeping the previous WP install live, so I added another WP install in another subfolder (Eg. “Subfolder-B”). Again, the URLs for the new WP install in “Subfolder-B” are also different than they are for the “Subfolder-A” install.

Now I need to add additional 301 redirects from the first WP install in “Subfolder-A” to the new WP install in “Subfolder-B”, but with new URLs in “Subfolder-B”. — Using the same 301 example as above…. After I make “Subfolder-B” live with RewriteBase, I don’t see how I can then use the original 301 redirects, eg…

Redirect 301 /old-widget.html  http://mydomain.com/new-widget/

Redirect 301 /new-widget/  http://mydomain.com/Subfolder-B/new-widget-with-new-URL/

If I instead change the redirects to the following (adding “Subfolder-A” back into the URLs), will Google have an issue with this?

Redirect 301 /old-widget.html  http://mydomain.com/Subfolder-A/new-widget/

Redirect 301 /Subfolder-A/new-widget/ http://mydomain.com/Subfolder-B/new-widget-with-new-URL/

Any advice greatly appreciated.