I'm planning on retuning the RS Portal data-source this evening. That will mean that the portal EPG data will be unavailable for a short time and then will be back with new channel numbers and services. If you retune your Humax earlier or later than the RS Portal, then it shouldn't matter in the main. RS uses a number of attributes to try and pick the right channel for recordings and will only struggle if none of the stream service ID, channel number and channel name match. There are a couple of channels that fall into that category (due to capitalisation or spacing changes) but none of the mainstream ones as far as I'm aware.