So far in my FME model have been able to isolate and clean out boundary description by globally deleting them over the whole shapefile. All tenements that have single bounadaries in their lifetime have been moved elsewhere. I have reduced the number of tenements by 80% and am now left with the more complex multiple boundaried tenements
The criteria for isolating the specific tenement from multiple tenements is complex and I don't expect you to take that on board; I only want a framework of how to select a group of same numbered tenements within the shapefile, be able to select/filter on certain criteria such as area or date send this filtered data somewhere and then go on to the next group of multiple tenements within the shapefile.