OLDPRICE not updated in combinations with offer

[aldocampione]

Hi I have verified that in 1.6 but also in previous versions when there are combinations with an offer, the original OLD_PRICE price is not updated.

Example: Item with price 300 euros and discount of 50% on all combinations

Combination 1 - Price 300 discounted 50% 150

Combination 2 - Price 400 discounted 50% 200

Combination 3 - 500 Price Discounted 50% 250

The price is always shown fairly (150,200,250) while the original one (striped) always remains at 300 euros instead of displaying 400 and 500

Here is a flashy case

http://www.scerminogioielli.it/anelli/51-anello-solitario-oro-bianco-diamante-naturale-d-vs1-050-carati-certificato-aig.html