Is the Will or trust I had prepared in another state valid in Arizona?

The validity of a Will or trust is determined by the laws of the state in which it was prepared. If your Will or trust was valid in the state in which it was prepared, it would likewise be valid in Arizona. However, because different states have different laws (for example, community property versus separate property) it is always wise to have your documents reviewed by a competent estate planning attorney in your new state of residence.