At the time this post was written, one of the most common issues and complaints about the FamilySearch Family Tree program pertained to problems incurred with merging duplicate individuals. The reason for this issue in the Family Tree program, dates back to decisions made in the New.FamilySearch.org program. Duplicates in that program were resolved by "combining" individuals rather than merging the individuals. As the program progressed, there was a limit of the number of combinations that would be allowed in New.FamilySearch.org. When Family Tree was introduced two years ago as a replacement for New.FamilySearch.org, FamilySearch began by sharing the same database used for New.FamilySearch.org. As a result, the limitation on combining individuals carried over to Family Tree. Unfortunately, it has taken some considerable time to resolve that particular issue.
The limitation on the number of combined individuals has created a situation in Family Tree where the merge function will not work for individuals who exceed the limit set in New.FamilySearch.org. From conversations with FamilySearch representatives I am certain that this issue is being addressed and will be resolved as soon as the New.FamilySearch.org program is entirely separated from Family Tree. I am not presently aware of any firm timetable for this to occur.
It is possible that you will see a message such as the following shown in this screenshot:
The message says,
These records cannot be merged because the corresponding combined record in new.familysearch.org would be too large. To merge these records, please wait until new.familysearch.org shuts down.Contact FamilySearch.Meanwhile, if you have ancestors in your family lines that appear to have duplicate entries but those entries cannot be resolved, you will need to wait until the official announcement of the discontinuance of New.FamilySearch.org before the problem can be resolved. While you are waiting, you can certainly spend a great deal of time on those parts of your ancestry where this is not a problem. Primarily the only individuals in the program involved are those who exceed the limit placed in New.FamilySearch.org. If your family has been active in the Church for several generations it is extremely likely that some of your ancestors fall into this category.
As the transition from New.FamilySearch.org to Family Tree continues there may be some other data issues, however, these issues will be resolved as the programs are separated.