BQ40Z50: The relationship btw CUV update and FCC update

Part Number: BQ40Z50

Tool/software:

Hi TIer

My customer use BQ40Z50 in some mass production product. So it is after learning , and currently no issue now.

We want to change CUV to change the minimum discharge cut-off voltage.

Does this lead to any risk? Is the FCC update ok? Do I need to learn cycle again?