title: Wix Install the same Version
body: <p>I have a wix installer with five features. My current version is 0.0.0.125. I am installing this in one machine with first three features. Later i wish to install the remaining two features and so deselected first three and selected the remaining two features. 
  So this time the first three already installed should not be deleted, and the remaining two features should be installed. But when i install the same build second time, the three features are automatically removed from the destination location and the selected two features only installed.</p>
  
  <p>I used RemoveFile child attribute to each Component to overwrite and when i manually copied the file and pasted into the destination directory, next time when i install the same version installer, it is not overwriting and deselected(previously installed features) features also deleted. So i have restricted this by adding 1 in InstallExecuteSequence. </p>
  
  <p>i)I need to overwrite all the files
  ii) Each installation of the same installer should not delete the previously installed files</p>
  
  <p>Thanks</p>