Arkansas does not recognize a Texas RE license. The Arkansas Real Estate Commission has a web page page that lists those states that they have reciprocal agreements with and the list can be found under the Licensing Tab at http://www.arec.arkansas.gov. You might be able to get part of the exam waived though.
What part of Arkansas are you moving to? I have family there and we go there all the time. Some day I would like to get a license there too. Let us know how the process is to get the license and how your transistion goes. Best of luck to you .. Bruce