4 answers

• 
  Tony over 4 years ago

  Hi Adeleke, I'm no expert but here goes.
  Save the newer file in question as a .step file somewhere in a different directory, Then open this file in the older version of solidworks, then save it as a .SLDPRT.
  You may lose some functions such as mates for assemblies, but individual files work fine. Good luck.

• 
  C Bd over 4 years ago

  If you post files as a request somone with save in format you can use

  1. 
     A0I0A over 4 years ago

     Is there any risk of me losing anything

• 
  C Bd over 4 years ago

  You will lose features but may be able to get them back with feature recognition
  I would try to .x_t files parasolid
  I have had good luck with this method SW 2011-2010

  1. 
     A0I0A over 4 years ago

     what is feature recognition. Is it available in Solidworks 2009

• 
  C Bd over 4 years ago

  Insert
  Featurework
  Recognize features