Thank you for creating a great redirect component.

ReDJ works for me, except that my redirected URLs are case sensitive, even when Case Sensitive is unchecked.
This is what happens:
1) I created a redirect in ReDJ, Case Sensitive is unchecked.
2) I enter the OLD URL into a browser, and the redirect works fine.
3) I change the case of any letter in the OLD URL and the redirected URL is broken.

Here is an example:
In ReDJ
From URL: ^/backgroundcheckForum/
To URL: backgroundsearch.com/background-search-forum/{pathltrim /backgroundcheckForum/}{queryfull}
Case Sensitive is unchecked.

(Please excuse my all caps in some comments below. All caps are used to distinguish my comments from the URLs.)

Results:
OLD URL entered into the browser:
backgroundsearch.com/backgroundcheckForum/General-Immigration-Topics/Tourist-entry-into-the-USA-with-a-criminal-record
NOTICE the capital F in the word “Forum”.
REDIRECTED RESULTS
backgroundsearch.com/background-search-forum/General-Immigration-Topics/Tourist-entry-into-the-USA-with-a-criminal-record
THIS WORKED FINE.

Change the case of f to lower case in the URL word "Forum" when entered into the browser.
Enter this into the browser:
backgroundsearch.com/backgroundcheckforum/General-Immigration-Topics/Tourist-entry-into-the-USA-with-a-criminal-record
NOTICE the small f in forum.
THAT GETS REDIRECTED TO
backgroundsearch.com/background-search-forum//backgroundcheckforum/General-Immigration-Topics/Tourist-entry-into-the-USA-with-a-criminal-record
WHICH SHOWS 404 NOT FOUND
Notice that the redirected URL contains a double back slash in the middle of the URL: "forum//backgroundcheckforum"

Thank you for any suggestions:

More info:
I have some important backlinks that go to my old forum address:
backgroundsearch.com/backgroundcheckForum/ + categories & article names.

I would like to redirect them to my new forum location:
backgroundsearch.com/background-search-forum/ + categories & article names.

So basically, I need to clip out a section of the incoming old URLs (remove "backgroundcheckForum")
and replace it with the a new section the the URL (insert "background-search-forum").

As I read through the ReDJ instructions, I think that ReDJ should be able to do that, but I have not figured it out yet.

A post in this forum seems to have a similar answer to my solution above. See Redirect only part of an alias of alias .

From URL: ^/aliasA/
To URL: {scheme}://{siteurl}/aliasB/{pathltrim /aliasA/}{queryfull}
Request only: true (checked)

That works, but "pathtrim" still makes the URL case sensitive. Any different case in the From URL breaks the redirection and creates a double backslash in the To URL.

When I get a double backslash // in the middle of the To URL, I wonder if a loop is the problem, and do I need a skip command like in this post. indeepblue created the topic: Redirection

From URL: /123-xyz\.html$
To URL: {scheme}://{siteurl}/realcategory/123-xyz.html
Request only:true (checked)
Skip: /realcategory/123-xyz\.html$

(Preview did not work in this forum for this post, so I hope it reads ok.)

Thank you for the reply. Here is my database information.

Database Version 5.5.35-MariaDB-1~squeeze
Database Collation latin1_swedish_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 7.0.98-servage1
Web Server Apache

It appears that my website hosting service is using latin1_general_ci.
Do you have a recommendation?

I used Akeeba Admin Tools to change Joomla Database Collation to utf8mb4_general_ci. I cleared all cache and SEF URLs, however redirect is still case sensitive, with the same results as described above. Should I change Joomla database collation to UTF-8 multibyte? Thank you for suggestions.