Yes sadly I did "toss them"
3 reasons:
1. Never spent much time in TRS2004 at all. Just didn't have much spare time back then.
2. When I bought TC1&2, it also came bundled with TRS2006 as a 2 DVD set. TC1&2 is what got me into Trainz hardcore. I spent my time in TC1&2 building routes (since I got into light rail transit and Metropolis-Modula City seemed a good place to start) which then I imported into TS2010. Never spent much time in TRS2006.
3. TS2010 runs much better on my Sony laptop than TC1&2, so I gave my old desktop to my neighbors. Now I have 3 old versions with no prospective use, and I am getting ready to move, so out they went. Heresy I admit.
I'll keep my eyes open for a TRS2004 to get the signalling guide. I stilll think it should have been included in TS2010. Thanks for the advice.