I disputed a small collections and EX showed that it was recently added! How can that be the case if I was able to dispute it? Score dropped 15 points! Pissed. 
You saying that after the dispute, it showed a new recent updated date for this collection?
@egaithe wrote:but how can it show that it's "newly been added" when it's already on my credit report?
@takeshi74 wrote:That's a potential pitfall with disputes. In some cases the item will update and have a negative scoring impact. Not unique to EX. Carefully research in Rebuilding before taking action on derogs.
Because it's catching the tradeline status and for some reason interpreting it as a new collection; or it's triggering off the DOLA (which would be wierd for a monitoring solution) but either way the tradeline updated enough compared to the old one that it looks "new" in the interface.
That said Take is correct, collections being updated either via paying them or via dispute can do unfortunate things under the FICO algorithm, and damned if I know why and why that wasn't fixed a long time ago as it should simply be calculating off the reported DOFD (which will be the collection file date if one wasn't furnished by the CA).
