Before you proceed, please read the following instructions carefully and copy all the steps to a clipboard to keep them at hand. Make sure to complete each step:
Create a backup of the BigGantt data
Download the BigGantt backup to your machine
Turn off BigGantt
Install BigPicture
Restore the BigGantt backup in BigPicture
Steps 1 & 2 - create a BigGantt backup and download it
Go to BigGantt App Configuration > Advanced > Database dumps
Press the New dump button, add a description and confirm (Create dump button) Wait for the process to finish
The newly created database dump should appear at the top of the list (page refresh may be needed)
Download the file and save it on your machine.
Steps 3 & 4 - turn off BigGantt and install BigPicture
Go to Jira Administration > Manage Apps
Disable BigGantt
Install BigPicture plugin
Enter a valid license
Run BigPicture plugin, the database configuration process will begin
Step 5 - Restore BigGantt database in BigPicture plugin
Go to BigPicture Configuarion > Advanced > Database dumps
Upload the BigGantt dump you have created earlier to the BigPicture (Import button)