Reply To: Paragraph Style Problems? Please help!

I'd take a wild guess that CS4 was installed using the US English setting, and CS3 with International English setting. I don't have multiplie suite copies with the different settings to test this out, but I could see ID forcing the change when the copy is imported from an International English install to a US English install. If I recall correctly, there were odd issues with International English versions during the prerelease testing of CS4 products (fixed prior to launch, I'm pretty sure), so there are obviously some obscure-but-significant internal differences depending on which option you choose during the installation.

The simplest workaround is probably to just go ahead and bring in everything you're going to be working with, then do a global Find/Change targeting that specific formatting setting. Save the query for reuse as needed, since you'll likely be wanting it again, by the sound of things.