This is typical behavior and many people restart the interface if many PI Points have changed. If you are changing 9,000 takes it will take awhile for the changes to populate.
Per the UniInt guide:
During subsequent operation, the interface checks every two minutes for points that have been added, changed, or deleted. (To modify the frequency with which the interface checks for changes, go to ICU’s UniInt page, select Point update interval (sec.) , and enter the desired frequency.) During operation, UniInt interfaces process point changes in batches of 25. If a large number of points have changed, you can speed loading by stopping and restarting the interface. UniInt interfaces write the digital state SCAN OFF to any points that are removed from the scanning while the interface is running.