Hioki .mem Files

I have a Hioki 8870-20 Memory HiCorder which produces files in the .mem format. I use the associated Wave Processor software to analyze the resultant data.

Is there a way to append multiple files to one another to make it easier to track long term data? I have 20s samples and have to use the "slide" feature to view files in a timeline. I would like to merge, say, 12 hours of data so I can just zoom and pan to view the entire structure without the constant pagination.

Does anyone know of a way, or a better software solution to do this with?