The internet has dementia

In my line of work I have to regularly lookup stuff in order to progress a project I'm working on.
I'm also regularly confronted with old versions of software, for instance I'm now working with Navision Attain 3.6, which is at least 7 years old.
Well and this is annoying that starting at certain ages information about programs and products start going off the net because they've become obsolete.
Which sucks for people like me who still have to work with them.