Incorrect consumption revaluate in ML cumulative run

Hi,

we are faced with a problem for which we can not find solution for a week. We make an alternate cumulative run for a year in the 12 period (from 1 to 12 periods). Consumption revaluate is correct, but in the next period ML makes reverse accounting entry. For example: the cumulative inventory is 100 units, the price variance is $ 100. We use 50 units, ML adjusted $ 50 to the consumption (31.12.2016). Next month (01.01.2017) ML makes reverse accounting entry ($ 50). If somebody can tell, what settings we need to check, I will be very grateful.