Manual installations vs "Download Assistant" ones

As far as I can see the Steinberg Download Assistant does not show as “installed” those products that were installed by directly launching the “setup” files (as I actually did, out of habit, before trying DA).
So I’m in a somehow “mixed” situation, with some of the actually installed programs showing as not installed inside DA.
All the installed programs, anyway, seem to work correctly, at least as far as installation related problems are concerned.

This suggest me two questions:

  • Is there any way (configuration file editing or something) to make the DA… notice those “stranger” installations without having to relaunch them, together with the respective downloads?
  • Can a mixed situation like mine create, beyond the obvious (little) inconveniences, any actual problems?

Is the manager up to date?