Portal 1 Maps + Mods into Portal 2!
I have done this. But Everything isn't right! i coped absolutely EVERYTHING from Portal 1 + HL2 into portal 2 (didn't over wright ANYTHING), than i coped and pasted all the maps and Test Chambers from portal 1. the maps did work (except Escape_02) (except for some maps from mods + Stuff) but there were no Speaking from like GLaDOs and stuff for the P1 maps. What am i Doing wrong?
All the choreo files in Source games are baked into SCENES.IMAGE files, so you need to combine the Portal 1 and 2 lines into one file. At the moment, since default content will override mods in Portal 2, only the original P2 quotes work. I believe Faceposer can do this, although I've never tried it.
Well then, you snakekiller have done more than me.
I have previously tried putting P1 maps into P2, but to no avail.
Keep going, I am willing to help.
-LCLover
But you cant publish any p1 map in p2 workshop, maybe only reworked ones, for copyright reasons. Unless P1 is free (I don't knoow, maybe) if those who didn't buyed P1 can play the maps in P2 that can be wrong. Even I had to ask for permission to use some HL2 tree and rock model and texture (from the source shared gcf that comes with P2 alone as well) if I can use them.
However remaking 1-2 P1 map can't hurt I think if they are a bit modified. 
Portal isn't free, but afaict VALVe is fine with remakes. Look at Retrospective, and all the PTI remakes of P1 levels on the Workshop.