Actual bottleneck
An XER file alone does not demonstrate that all database data and settings can be recovered.

For Primavera P6 Professional 25.12 on Windows. Stay current while maintaining disciplined backups and compatibility checks.
project360
Updated professional tools should be accompanied by compatibility review, backup and output control. This free tool is a step from the Project360 team to help the community plan and control the project.
Advanced training with information preservation.Primavera’s primary software is owned by Oracle; the free plugin does not change the primary software license.
Explore the control logic: select a stage and see how a hold at a critical point affects the process.
The route is displayed in normal mode.
An XER file alone does not demonstrate that all database data and settings can be recovered.
Identify the database type and supported upgrade path, then create a full backup and test the recovery procedure.
Before the production migration, reconcile projects, baselines, calendars, resources, relationships and settings against the restored copy.