There is no widely known or documented story of the Badrinath idol being brought from Kedarnath. Badrinath and Kedarnath are two distinct and significant pilgrimage sites in the Indian state of Uttarakhand, both dedicated to Lord Vishnu and Lord Shiva, respectively.
Badrinath is one of the Char Dham pilgrimage sites and houses the idol of Lord Badrinath, a form of Lord Vishnu. Kedarnath, on the other hand, is dedicated to Lord Shiva and is also a crucial pilgrimage destination.
It’s important to note that the idols in these temples have specific religious and historical significance, and there is no traditional or well-known narrative suggesting the transfer of the Badrinath idol from Kedarnath. The legends and stories associated with these temples are usually rooted in the respective deities and their manifestations rather than the idols being moved between the temples. If you have a specific context or source mentioning such a story, it might be worth investigating further for accuracy and details.