Yes, the "beaker" can be installed permanently - I'd try a small dab of Crazy Glue in an unimportant place first to see if it dissolved the plastic. This. though, would dedicate the lid for print use only. The "beaker" must be replaced with the "cone", and spindle to work with film reels.
You might want to consider replacing the lid. I'm nearly sure that JOBO sells them as replacement parts.