Depending on how routes are redistributed, it may be necessary to change administrative distances to ensure there is no sub-optimal routing path.
For instance, perhaps an intra-area OSPF route over a sub-optimal routing path has an AD of 110 (default), while a redistributed/external EIGRP route with AD 170 is actually the better path…
Here is an example of changing the AD for specific routes learned through a specific neighbor:
The cheat sheet for configuring distance between OSPF, EIGRP, and BGP:
Stuck-in-Active: Journal of an IT-Network Administrator 