Use classifier training set with other properties files

I have a properties files from CellProfiler containing a few images that have the most examples of the variety of cells I need to sort using classifier, and I created a training set from this properties file in CellProfiler analyst. However it will only let me load this training set when I use this properties file, which would mean that I’d have to regenerate the training set every time I get new images and they may not contain the variety of cells needed to generate accurate training models. Is there a way to get around this?