I'm a longtime TMG user -- I was part of the original DOS-version design group in the early '90s -- now a refugee like so many others, and I've been gradually convincing myself to switch all my TMG datasets to RM. (I especially like that the direct import fuction appears to preserve all the oddities from TMG that don't get picked up by GEDCOM.)
However: I have a number of different TMG datasets for ongoing research projects -- "whole population" studies and such -- and I make heavy use of Focus Groups to keep track of subgroups within those projects. (Like church congregations, Civil War companies, and so on.) Some of those datasets have several thousand individuals in them, and some of the Focus Groups in those large datasets run more than 800 persons each. But when I do the direct import of the TMG dataset into RM, it doesn't pick up those Focus Groups at all.
I know that RM has its own version of groups, and I've played with those experimentally. But I really don't want to have to re-create a large group from scratch by going down the list of people in RM and check-marking hundreds of them, one at a time, to create a new group. Nor do I see any way to add people to RM's groups by specifying "add all descendants" of a person, or anything like that.
Does anyone have a suggestion of some way to accomplish this construction of groups that wouldn't take months to do? Something I may have overlooked?
I would also really like to recommend that this translation of TMG Focus Groups into RM groups be included in the new version of RM!