Hi Ruben.
I think the steps you follow are correct. Only have 2 questions in mind:
1. Do yo do the ML Close in the period you are runing KE27 ?
2. Do you tick "All Value Fields Modifiable" and/or "Periodic Valuation"?
Could you post here the log of your ke27 run ?
This screen is an example of a correct revaluation>>>
This screen is an example of an incorrect revaluation, related with both ideas i give you.
Arturo.