We get enough reports of strange behavior trying to update legacy .indd files directly into new versions that I now recommend, and routinely export the files to be updated to .idml in the original versions, then use that to make the new version. To do that you need to have the older version installed.
I've done that and am working on the new AID CS6 idml with AID CS5 installed on my machine. However I feel it in my bones that when when I delete the AID CS5 software, the problem will arise again because when opening the interactive documents without directing my computer to 'open with CS6', the computer always choose AID CS5 to open the documents.
'we get enough reports of strange behavior trying to update legacy.'
Could you explain and expand on this because I'm thinking of updating to Creative Cloud and if I have to go through this again, I think I'll stick with CS6.
It doesn't always happen, and I have nothing but anecdotal evidence, and no firm idea about the root cause, but we often see reports here about .indd files that suddenly dispaly strange behavior or suffer fatal errors, often at the point of final output, or after hours or days of editing. A large number of these files were initially created in previous versions of ID, then opened in a newer version and editing continued.
Thanks for the warning. I've had similar problems before and ONLY with AID and not Illustrator or Photoshop.
I think CS6 is as far as I will venture on all existing projects.