If you modified a file in the src folder and want to preserve it, check to see if there is a "IN_POQ" or "IN_QW". If not, you can overwrite the file into your POQ directory (from src). You could also remove any code surrounded by "IN_QW" (along with itself) and remove only the "IN_POQ" brackets. Although as I type this it sounds more confusing, so just ignore it if this sounds too complicated.
Let me provide an example. Assuming you modified the src directory. Take the file settings.qc as an example. There are only two lines of code to modify (lines 89, 549):
Code:
string FORWARD_DEST = IN_POQ("quake.runequake.com", "qw.runequake.com");
float SUCK_FORCE = IN_QW(0.35, 0.25);
You could make this change,
Code:
string FORWARD_DEST = "quake.runequake.com";
float SUCK_FORCE = 0.25;
Save the file, then drop it into your poq directory and compile and that will work. If you haven't made that many changes, then it's probably just easier to modify the file in the poq folder, but in the event you made a bunch of changes and don't feel like going through each one, follow this method.