Before you start exporting specific branches, we suggest you review your family tree and choose which ancestral branches to export. It will save you a lot of time when you get to the list of people you choose to add to the exported file.
To export specific branches of your family tree:
Open your tree in Family Tree Builder.
Go to File > Export GEDCOM.
Click ‘Save As’, choose the folder on your computer you’d like to save to and click ‘Next’. In your case, you will want to give this tree a different name than your main tree. You may want to name it after the eldest ancestor in the branch you are exporting, for example.
If you wish to fill in author information or add a description to the file, you can do so here. It is not necessary though. Click ‘Next’.
Choose the language of the tree. Click ‘Next’.
This is the screen where you will choose a specific branch to export. Choose the ‘Include specific people only’ option and click ‘Select People’.
Click ‘Add’ to select people from your tree.
Select the person you want to add. (In the next step you will choose if to include descendants, so select only the eldest ancestors).
For each person you choose, you can include Descendants and Spouses, Descendants only, Spouses only, or only This person. You can also include Ancestors.
Use the ‘Edit’ button to do this. When you’re finished click ‘OK’.
Then click ‘Next’.
If you have photos in the tree, you’ll see the following screen. It is recommended to click ‘Yes’.
Click ‘Finish’. You have just created a new tree which contains a certain branch of your family only.
NOTE: Exporting a branch from the family tree has no effect on the main tree.
In order to sync the new project, you will want to open it in Family Tree Builder first. Go to File > Import GEDCOM and import the GEDCOM you just created. Then sync it with your family site.