rolling forward the previous valuations

[PearlShine]

помогите, пожалуйста, как правильно оформить по-русски:

rolling forward

Контекст:

The first such report shall be in respect of the period from the First Closing Date to the first Quarter Date after the First Closing Date, provided that, in respect of the quarter dates falling on 31 December and 30 June, the valuations shall be determined by rolling forward the previous valuations at the relevant Investments' assumed internal rate of return taking into account any changes in financial and operating assumptions and allowing for distributions made to the Partnership during that period.

[maria_@]

Может быть,

значение может быть выведено из предыдущих значений.
Только на правах предположения