disconnect: fixes scheduler logic to respect replace field

[mismithhisler]

Description

These changes refactor some scheduler code to respect the disconnect.replace field which was currently being ignored and update some logic/method names for code readability.

Testing & Reproduction steps

Links

Fixes internal Jira NMD-1063
Fixes GH-27028

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Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

[mismithhisler]

Renamed to use positive function naming, which avoids double negatives.