I moved a site w permalink structure /%postname%/. The old site urls point to the new site urls (same urls / permalink structure), but I had cleaned up my tags on the old site, merging the old ones w new.
After much effort I have redirected all the old tags to the new tags but I have encountered many 404's for old tag url requests that are missing the trailing slash, most of which I have already fixed as urls with a trailing slash. i.e.
/tag/frank-sinatra/ 301 --> /tag/singers/ = 200 Success
/tag/frank-sinatra = 404 Not Found
The old tags are being 404'd before a trailing slash can be forced to the end of the url (by WordPress)so they can be redirected to the new tags.
Is there a solution (hopefully plugin-less)for this other than creating individual 301's for each old tag url missing the trailing slash? thx