Why did the California Protected Pay calculation drop dramatically?

Summary:

I am seeing a few CA TMs who have had consistent garnishment deductions. Then all of the sudden on the same pay period, their garnishment amount increased dramatically. I can see that the protected pay amount went down for these TMs, but I need to know why. Nothing has changed on their calculation cards. I don't see that anything has changed for our California Garnishment Protected Pay Amount or Rate in Calculation Value Definitions.

Please help explain why this could happen or where I can look in the system to verify that this is correct.

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