OO2 Impress vs OO3 Impress paragraph viewing problem

I recently upgraded my desktop to OO3 and have been using Impress for class presentations for since ver. 1. Now when I create a file using OO3 I on my desktop & then try viewing that same file with OO2 using Portable Apps all paragraph wrapping is lost and the text spreads out in one line from off the left screen to off the right screen. Unfortunately I did now know of this until using the file for a class presentation. Fortunately I had the hard copy and was able to give the students the information verbally. This was posted in OO desktop a couple of days ago but with no replies as yet. Perhaps someone here would know of something being done to correct this backward compatibility problem.

Thanks for any help.

BTW I know I can end each line with an but that is not a fix it is a bandaid.