From changes.txt in program files folder of UltraEdit:

v18.00.0

• Added support for automatically connecting to FTP account when opening FTP Open or Browse dialog

Additional information about how to use this feature which was sent by email to beta testers of UE v18.00:

IDM wrote:To enable automatically connecting to FTP accounts when opening the FTP Open or Browse dialogs, please go to Advanced - Configuration - FTP and determine which of these options is selected:

1. Store FTP accounts and settings in user selected file
   In this case, the setting Auto Browse FTP=1 must be added under the [FTP Settings] section in the file specified in Configuration.
   
2. Share FTP Accounts
   In this case, the setting Auto Browse FTP=1 must be added under the [FTP Settings] section in the file
   %APPDATA%\IDMComp\Common\FTP Accounts\IdmFTPAccounts.txt
   
3. Standard (neither of the options above is selected)
   In this case, the setting Auto Browse FTP=1 must be added under the [FTP Settings] section in the file
   %APPDATA%\IDMComp\UltraEdit\FTPData.ini

Also of interest could be the UltraEdit for Windows/UEStudio power tips:

• Configure FTP/SFTP in UltraEdit and UEStudio
• Configure FTP backup
• Link remote directories to local directories
• Shared FTP accounts

And for users of UEX there is the power tip:

• Open and edit FTP/SFTP files in UltraEdit for Linux