You may import as many times as you like in the day which will refresh your data and current datapoint if within an hour of the last datapoint. Check the "Datapoint taken*1" part of the "Adventure and updates" - basically, if the last import is more than an hour old then it becomes permanent.
Plot points are now clickable and take you back in time to show how your hero used to look in the past, this only works for imports made on and after the 23rd Oct.

Click here to see how to use the DPS and EHP calculator

Dynamic Signatures
Each of your heros have a dynamic signature which features a random background and position numbers are automatically updated once per day.
Your level, skill set, score, unbuffed dps and unbuffed ehp will only be updated on an import.

Strict caching is in use so automatic changes only occur once a day to conserve server resources.

A full character import will however regenerate a new signature (you may need to refresh the browser to see it).