Çözüm:
Htaccess içeriği şununla değiştirilecek:
# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteEngine On
RewriteCond %{QUERY_STRING} ^m=1$
RewriteRule ^(.*)$ /$1? [R=301,L]
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
# END WordPress
# Begin Redirection
#Redirect archives
RewriteRule ^([0-9]{4})_([0-9]{1,2})_([0-9]{1,2})_archive.html$ $1/$2/ [L,R=301]
#Redirect labels/categories
RewriteRule ^search/label/(.*)$ category/$1/ [L,R=301]
RewriteEngine On
RewriteCond %{QUERY_STRING} ^m=1$
RewriteRule ^(.*)$ /$1? [R=301,L]
#ATOM Feeds
RewriteRule atom.xml feed/atom/ [L,R=301]
RewriteRule feeds/posts/default feed/atom/ [L,R=301]
#RSS FEEDS
RewriteRule feeds/posts/default?alt=rss feed/ [L,R=301]
RewriteRule rss.xml feed/ [L,R=301]
#Comments Feed
RewriteRule /feeds/comments/default comments/feed/ [L,R=301]
RewriteRule /feeds/comments/default?alt=rss comments/feed/ [L,R=301]
# End Redirection
Kaynak :
https://www.shoutmeloud.com/migrate-blogspot-wordpress-301-permaredirection.html