create model zip file, copy model files: only tags from last case are used
When all cases have been created, wetb.prepost.prepare_launch creates a zip file and optionally copies all the model files to the [run_dir]
(see wetb.prepost.Simulations.HtcMaster.create_model_zip and wetb.prepost.Simulations.HtcMaster.copy_model_data). The current implementation only considers the values of the tags as used for the case generated at the end. You risk not copying files in this manner that might have been necessary for other cases but not the current one.
Solution: find necessary files and directories based on ALL tag values in cases.