Do you have a back up copy of your file that has this layout?
i still am able to use the layout in filemaker go
Do you use a copy of the same file on your iOS devices or do they connect to a hosted database as clients of that database?
If you copy over a copy of the same file to your iOS devices, you can copy this file back to your computer and get the layout from it.
If you want to keep your current file and add the layout back from a different copy of the file, see this thread as the steps can be tricky: Importing Layouts
Perfect thank you, ended up using an older copy and changing some formating