Some users, of FatWatch and other iPhone applications, have reported that after updating their data has disappeared. Therefore, it is recommended that you use the Wi-Fi Import/Export feature of FatWatch to save a copy of your weight history before updating.
If your data is missing after the update, you can use use Wi-Fi Import/Export to restore your weight history from the backup file.
Under some circumstances, FatWatch 1.0's exported file will contain dates that are off-by-one-day. If you import this file into FatWatch 1.1, your data will continue to be off-by-one-day. If you do not have many dates, you can fix the
weight.csv file manually using a text editor or spreadsheet application. If you would like assistance with this, please contact me and I will try to find a way to automate the process for longer files.