Replacement for deprecated EntryRevisions service
Revisions and Drafts are first-class citizens of the Element world in Craft 3.2.

So for your example:


  The plugin has it's own tables the track drafts by it's ID alone, so it's my primary means of looking up drafts.


This is what you would do:

$draft = Entry::find()
    -&gt;draftId(123)
    -&gt;one();