well when we moved providers and the values didnt get updated for 2 weeks or more we had many complaints as our values were not accurate at all and there were still sharp increases and decreases in furni, if people see anything dropping they panic and all try to sell which means a big drop, why lose out just hang on to it and it should go up again except hc rares which will not realy go up much but the throne sofas and majestics wont drop alot but they may even rise a little.