Can you pump directly into previously refrigerated milk?
Yep you can! But only for 24 hours.
"While it was originally thought that a mother had to cool her fresh breastmilk before combining it with previously expressed cooled milk, the latest research now shows that you may pump directly into already refrigerated or cooled milk as long as the milk is added within 24 hours of the first milk expressed. You should then follow the storage recommendations based upon the time and date of the first milk expressed. You may pump directly into milk that has been stored at room temperature as long as you do so within 10 hours. This milk would need to then be used. "
taken from http://www.breastfeed-essentials.com/storagehandling.html
I found the link on Kellymom.com
There are a few other links there that have some other storage guidelines!
Thanks for posting that Melissa, I didn't know the recommendations had changed since the last time I was pumping.