The question skips some details. Are the clones used for a specific reasons in completely disconnected teams, or have mixed have purposes in the same area? Do they all use the same source of truth or do they replicate data/accounts? Is it because of 2 separate groups not communicating, or a failed/incomplete migration?

There are many reasons you may end up with 2 software packages with similar responsibilities. It's not always good or bad. All things being equal, using the same software everywhere means everyone if familiar with the same interface, potentially lower costs, easier automation. But things are rarely equal ;)

I'd say: know the reason why you have clones to begin with and not a common solution. And maybe check it from time to time, in case the restriction is not relevant anymore.