Did not make the change

I tried to search the page contents for the following:
? Search <div id="related"> ... and replace with <div class="related">
But nothing was changed. Here is the report (I had selected Field but apparently the plugin switched the search to Table):

Results for:

Table: wp_x8g88f_posts ... Total Results for "
": 458

SQL
select * from wp_x8g88f_posts where <code>ID</code> like '%
%' or <code>post_author</code> like '%
%' or <code>post_date</code> like '%
%' or <code>post_date_gmt</code> like '%
%' or <code>post_content</code> like '%
%' or <code>post_title</code> like '%
%' or <code>post_excerpt</code> like '%
%' or <code>post_status</code> like '%
%' or <code>comment_status</code> like '%
%' or <code>ping_status</code> like '%
%' or <code>post_password</code> like '%
%' or <code>post_name</code> like '%
%' or <code>to_ping</code> like '%
%' or <code>pinged</code> like '%
%' or <code>post_modified</code> like '%
%' or <code>post_modified_gmt</code> like '%
%' or <code>post_content_filtered</code> like '%
%' or <code>post_parent</code> like '%
%' or <code>guid</code> like '%
%' or <code>menu_order</code> like '%
%' or <code>post_type</code> like '%
%' or <code>post_mime_type</code> like '%
%' or <code>comment_count</code> like '%
%'

The Settings page said:
“This replace function matchs raw text so it can be used to replace HTML tags too.”
My HTML is still the same. Perhaps this plugin only works on Posts and not on Pages?

https://www.ads-software.com/extend/plugins/search-and-replace/