1. Privacy protection: In some cases, personal work experience may be regarded as private information, especially for senior leading cadres. After job transfer, relevant parties may take measures to protect personal privacy, including deleting or hiding past work experience.

2. Changes in job responsibilities: After being transferred, leading cadres may hold different positions or be responsible for different job contents. In their new jobs, their resumes may start again, recording from a new position or starting point.

3. Organizational adjustment: Sometimes, major adjustment or reform of the organizational structure may lead to adjustment, merger or deletion of the resume of the original unit. This may be to adapt to the new organizational structure or management system and make the work record clearer and more accurate.