IPhoto Migration : Mixed Reference and Manged

Question

I just purchased a new mac to replace an old one,  in iPhoto I have one library and copied the library library across to new,  most photo's work fine however I have found some are only thumbnail.
After doing a bit of research it would seem iPhoto libaries can be created in two ways,  referenced and managed,  it would seem that some of my entries are reference and some managed.  I still have access to my old mac and iPhoto,  is there any way to consolidate all reference photo's to become managed and then copy across again?

Answer 1

Terence,  firstly thanks for the quick reply.
The iPhoto library manager seems to come in free trial and also paid version,  I guess I would need the paid version to use the functions you describe. I don't have Aperture,  when its price got reduced last year I debated it but as I was happy with iPhoto I put off buying it as no compeling reason to buy.  So I guess its £20 for library manager or £80 for Aperture,  and with Aperture I get the other benefits too.
So assuming its worth the slight extra cost I'd choose Aperture,  so I did some google research on what you describe that it can be done with Apeture and my understanding of steps would be something like.
      1)     Remove iPhoto library with items missing from new mac
     2)     Buy apeture 3 on old mac appstore
     3)     Free up enough disk space equal to size of iPhoto library or more
     4)     Install Aperture 3 onto new mac too
     5)     Open Aperture,  import iPhoto library,  File -> Import -> iPhoto Library,  and select to store “In the Aperture Library”
     6)     I am not clear if after I need to "Consolidate Masters" or if doing the import and telling to store in the Apeture library is already doing that.
If I do this,  I would hope my new Aperture library would contain a managed copy of every photo from iPhoto be it presently referenced or managed.