This is an editorial topic in preparation, not a published article.
How drift happens
Drawing sets drift when issued revisions are overwritten, emailed or re-saved under new names, so no one can state which set is current.
The correction
A controlled register with numbered revisions and release status makes the current set an objective fact, not a memory.
Keeping it going
The discipline lives in the workflow: revisions are approved and released through defined steps, not overwritten.