Exporting shouldn't harm the textures or the UVs. I do it all the time. Not to decrease poly counts though.
Check that the following boxes in 'advanced' tab of the export dialogue are selected:

• 'Write UV Coordinates'
• 'Write Surfaces'
• 'Write Material Library'
• 'Collect Maps'
  I use 'Write Normals' also; and 'Write Groups' by 'Surface Names'.
  I Haven't had any problems with textures or UVs on export with those settings.

Friends don't let friends use booleans.