I am doing some house cleaning on the site and made some minor updates to product titles and a rule was written in and it auto updated the URL to what the product title was with a redirect put in place from the old URL. If this a bad thing and should i leave the URL alone and just update the product title?

Then for the ones i did change the Product title and the URL was updated is this a bad thing and should i have just left the URL alone? These are all high ranking popular products so dont want to mess with any rankings going into busy season?