Missing line breaks / spacing issues – importing Office Windows to Office Mac

 I recently switched from Microsoft Office Windows 2010 to Microsoft Office for Mac home and business 2011.   I imported my PST files from outlook windows to outlook Mac using the import feature on the office Mac.  I had dragged and dropped the PST file from onto the desktop of the Mac before doing the import.  After doing the import my tasks lost all their formatting.  Bold / highlights / and line spacing all gone.  I can live without the bold and highlights, but my real issue is that I have years worth of information that has lost their line breaks so intead of being organized in a viewable format it is all jumbled together without any line breaks.  I am hoping someone has a solution so that I don’t have to manually fix this, it would take me a VERY long time.  Thanks in advance for your help!