ios – pod replace podname is not updating

If I run pod outdated I get this:

• RealmSwift 10.32.2 -> 10.48.1 (newest model 10.48.1)

If I then run
pod replace after which run pod outdated once more, I nonetheless get

• RealmSwift 10.32.2 -> 10.48.1 (newest model 10.48.1)

If I run

pod replace 10.48.1

I get

[!] The 10.48.1 Pod shouldn’t be put in and can’t be up to date

The podfile.lock has this:

There isn’t a model specified within the pod file:

pod ‘RealmSwift’, :modular_headers => true

The pod replace command is meant to “While you run pod replace PODNAME, CocoaPods will attempt to discover an up to date model of the pod PODNAME, with out bearing in mind the model listed in Podfile.lock. It would replace the pod to the newest model potential”

Why is pod replace not really updating it?