Most likely the dismissal from the court was "without prejudice" check the dismissal order. If it says "without" prejudice then yes they can sue you if they re-file within the statute of limitations. It it was dismissed for want of prosecution that means without prejudice. Many times people are not sued twice on the same debt because they already lost money suing you the first time. It is possible though and this is a relatively young debt with the default date being 3-11.
The statute of limitations to sue you for debt in Texas is 4 years from the default date so technically you could be sued again up to March of 2015 by any collector, unless the debt was dismissed "with prejudice" meaning it cannot be re-filed.
My comments are not legal advice and are for informational purposes only.
Statute of limitations is four years for breach of contract in Texas. The assignment would have to be in proper form, but if it is within 4 years and assignment is in proper form, then yes then can sue. I am open today until 8:30 p.m.
If it was dismissed with prejudice, the other collection agency can not sue you for the same debt. If they are trying to, they may be violating federal law which would entitle you to up to $1,000.00.
Feel free to call 732-660-8169 to discuss further.