Few months ago i have created a blog on blogger and the url is example.blogspot.com then after some time i got my custom domain and completed all the redirection process. i have added both blogspot.com(example.blogspot.com) and my custom domain (example.com) on webmaster tools and submitted sitemap for both domains. Sitemap formate that i submitted is example.blogspot.com/sitemap.xml and example.com.sitemap.xml
So my question is … Should i delete my old (example.blogspot.com) sitemap from websmaster tool? because i have added new sitemap for custom domain example.com/sitemap.com Or should i keep both sites and sitemap on webmaster tool?