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First we need to load the raw data again, as we know now to get to our epochs we loaded the raw data we applied a certain set of filters, then we cut the raw data into epochs. Now it has been shown that ICA works best if we apply a high pass filter with a higher cut-off frequency, more like one hertz this increases ICA performance. If we have epochs processed with a different filter, we don't really want to feed them into the ICA we would like to produce a new set of epochs with filters applied that are of advantage to the ica algorithm (This is the reason we two separated app one for epochs and another for filters) and to do that we have to start with the raw data again.