Have you ever made changes to a ColdFusion page and uploaded it only to be disappointed that your changes have not taken place. For some reason, sometimes ColdFusion does not acknowledge that the file has changed. There are probably caching settings that you can set so that this does not happen... but I don't know what those are and I'm rarely in the ColdFusion admin.
So, how do I deal with this? I put a few dozen line breaks at the end of the file and re-upload. The line breaks do not change the file in any functional way (and if they do, put them inside of ColdFusion comment tags), but this will create enough of a file size change for ColdFusion to finally take notice of the update. Once noticed, ColdFusion will recompile and serve you the new page. At this point, you can remove the spaces and re-upload (and who cares how long it take ColdFusion to recompile that version - no functional change).
This is a bit of hack, but if you didn't know this was an option, it might save you a few head-banging sessions. And, I'm not talking about needing this for every file; if you need to do this all the time, looking into other solutions. This is for that very rare situation where ColdFusion just wants to ignore your changes.