on LSF9.0.0.7 with 8.1 apps on windows. Upgrading apps to 9.0.0, keeping laua for now

From my forum research I concluded that since we're required to change the prodline name, we therefore have to recreate ALL laua security classes based on the new prod line.

When I asked our consultant if this was true, they told me no...that the security could be copied over with secdump and secload and then we would just have to make some changes to databases or forms that have reportedly changed. I question this because a webinar that I recently took stated clearly that you'd HAVE TO recreate all of the security classes.

Which is correct?

Thanks for any assistance...