Additional product documentation unavailable after upgrades

If you perform an Upgrade installation on a system that has additional products installed (such as NeTraverse Merge, SCO Advanced File and Print Server, or the SCO OpenServer Development System), the documentation for these products is unavailable unless the additional products are upgraded as well. (This does not apply to manual pages.) To retain the documentation for the older versions, you must remove the documentation package for each product and re-install it on the upgraded system from the original media.