title: Powershell Export Multiple Keys To One .reg File
body: <p>I would like to export multiple registry keys to the same .reg file. Every suggestion I've seen shows to use reg /e [key name] filename.reg, but I have a list of 4-5 registry entries I want to export and doing it this way will overwrite it each time.
  What I want is something like:</p>
  
  <ul>
  <li>Export HKLM\Software\Test\ABC  RegFile.reg</li>
  <li>Export HKLM\Software\ABC\123   RegFile.reg</li>
  <li>Export HKLM\Software\XYZ\Lala  RegFile.reg</li>
  </ul>
  
  <p>So that each registry key is appended to the same .reg file, not overwritten each time. How can I do this?</p>