From my point of view this question has two answers, although neither is too good!
Firstly thank you KFN for a very informative post, I am no Gedcom expert but I do know RM uses the ADDR tag for Place Details and that they do travel back and forth to my second program. I have felt that I wanted to put some more meat on the bones of my ineptitude statement, I was really saying I don't hold back embracing the features of RM simply because I might have a useful little freeware program which does not yet understand or work well with Place Details or Shared Events, should we also avoid the Standardized and Abbreviated Place fields simply as they are lost on Gedcom transfer or should we trust Rootsmagic will find a way to overcome this problem and preserve our hard meticulous work? I still prefer the later approach. I don't know why USA keep moving there fence posts but it's a problem we have to live with in all Countries and from a research point of view I believe Proximity reporting calculated from the Latitude and Longitude to both txt reports and Mapping is the only answer to understanding cross border, State or County boundaries and changing divisions over time.
It has saddened me to see user after user back away from various such supposed enhancements simply because RM has not finished these features to a standard users expect but instead move on to something else. If users do not use these features and enhancements due to inbuilt limitations then they are not enhancements fit for the purpose and are not value added, I do hope RM8 development takes a different direction. Sadly due to these ongoing frustrations RM is now my secondary program but I will still watch RM8 evolution and feedback with great interest.
Out of interest I exported a family of 3 using Shared Events, Place Details and Media attachments to my other program to recheck for losses. There were no exceptions but several Info lines, I will post a copy of the repost at the end of this post for the information of others, proprietary information has been removed. The transfer back to RM created some exceptions regarding Place Details Media attachment, it's not something I'm going to worry about as my only tie to RM now is the management of my geographic and local histories database.
Received information from RM to second program;
Same information as above without edits received back from second program Gedcom to Rootsmagic;
Information file generated by second program from RM Gedcom import; (RM Fact definitions striped)
l.10 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "3 WWW www.RootsMagic.com"
Record Type=Individual. Gedcom Id=I1. Record Number=1.
l.34 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "3 MAP "
l.35 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "4 LATI N54.3280556"
l.36 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "4 LONG W6.3925000"
l.37 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "3 NOTE The Irish name for Mullaghglass is Mullach glas"
l.38 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "3 OBJE "
l.39 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "4 _FILE D:\My Documents\Genealogy\Places\Armagh\mullaghglass-townland-ballymore-parish-armagh.PNG"
l.40 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "4 FORM PNG"
Record Type=Individual. Gedcom Id=I2. Record Number=2.
l.63 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 TYPE married"
l.64 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 DATE BEF 1883"
Record Type=Place. Gedcom Id=<none>. Record Number=2.
l.187 - INFO ONLY: Converted invalid GEDCOM tag to valid GEDCOM extension by adding underscore: "1 _OBJE "
l.188 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 _FILE D:\My Documents\Genealogy\Places\Armagh\ballymore-parish-armagh.PNG"
l.189 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 FORM PNG"
l.193 - INFO ONLY: Converted invalid GEDCOM tag to valid GEDCOM extension by adding underscore: "1 _OBJE "
l.194 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 _FILE D:\My Documents\Genealogy\Places\Armagh\ballymore-parish-armagh.PNG"
l.195 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 FORM PNG"
l.199 - INFO ONLY: Converted invalid GEDCOM tag to valid GEDCOM extension by adding underscore: "1 _OBJE "
l.200 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 _FILE D:\My Documents\Genealogy\Places\Armagh\ballymore-parish-armagh.PNG"
l.201 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 FORM PNG"
l.205 - INFO ONLY: Converted invalid GEDCOM tag to valid GEDCOM extension by adding underscore: "1 _OBJE "
l.206 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 _FILE D:\My Documents\Genealogy\Places\Armagh\ballymore-parish-armagh.PNG"
l.207 - INFO ONLY: Loaded uncategorised data (non-GEDCOM): "2 FORM PNG"