[choo-chee]

and easy to do, too: PLZ enable an option to choose automatic merged MXI filename, so after marking the group of MXI's to be merged, I don't have to point again to a folder and enter a filename - maxwell will automatically create the output merged MXI (e.g. "model5-merged.mxi") in the folder where the group is.... thanx

[Fernando Tella]

Or at least open the same folder automatically.

[Bubbaloo]

Yes, please.
And make the merging process multi-threaded.