Hi Alan Since you have a backup of Project 2, then restore it to get back where you started. I assume the common family records are linked into other records in both Projects. If so, then the records in Project 1 don't have those links to records in Project 2, and thus any simply copy won't work. Also I would be amazed if the records in Project 1 have the same Record Id as their counterparts in Project 2, so copy won't work. It is those things that File > Merge/Compare File resolves. BTW: It is to avoid the complexities you have, that most users prefer just a single Project. The only rational way to migrate the data without re-keying is to use File > Merge/Compare File. I cannot imagine what you did within Merge/Compare File that would delete records completely. Do study the associated Help pages, and the FHUG Knowledge Base advice: http://www.fhug.org.uk/wiki/doku.php?id=glossary:merge_compare_files A common mistake is to only merge Individual records and forget about Family records, etc, on the other tabs. It may be better to use the FHUG Forum for this kind of activity, where screenshots can be attached to postings to sort out where you are going wrong. Regards, Mike Tate -----Original Message----- Subject: Re: [FHU] Dual Project Data Hi Mike I am at a loss now. I added information to the individuals records in the Project but didn't change any relationships. I tried your suggestion but something went wrong and I deleted the records of the whole common family in the second Project. Fortunately I took your advice with backups!! I now have Project 1 with common family data and relationships and records un-usual to Project 2 and Project 2 with all records unusual to Project 1 without common records. Is there a way to copy selected records from Project 1 to records in project 2? Otherwise I think I will have to re-enter all the data again in Project 2. Alan -----Original Message----- Subject: Re: [FHU] Dual Project Data It sounds like you have updated the data fields but not the family relationships. You could try exporting a Gedcom for just the family group of individuals. Backup your other Project just in case!!!! Then on other Project use File > Merge/Compare File and just synchronise the new data. Will that include new Source Citations? If no new Individual records are created the Record Id should not change, therefore the Charts will still be valid. Regards, Mike Tate -----Original Message----- Subject: [FHU] Dual Project Data I have 2 projects and both share a family group. I have just finished updating this family group in 1 project. Is there a way of transferring the updated data to the other project without crashing everything.? Will this affect the existing second project chart.? The data will hopefully change but the basic chart should stay the same. Alan