I've been reading through the various threads (http://typophile.com/node/31762) regarding UPM size but I'm struggling to draw my conclusions.
Following these threads I tentatively drew a font at 2000 UPM. However when I generate OpenType PS I am encountering several issues including the halving of kerning values (or nearest possible half) in InDesign.
When I reopen this file in FontLab the cap height has been capped at 1500 (the actual value is 1522).
When I preview the font the leading is halved.
I was led to believe that it was possible to up the UPM to 2000! Can someone please offer a definitive answer?
Thanks in advance.