I recommend using the updatefiles.sh script file found in the haast-2.X.X-x86_64-XXX/install_files directory of the HAAst package you downloaded. This script will update all files to the latest version of HAAst. Just restart the HAAst service once complete. For example:
[root@pbx2:/usr/src/haast-2.3.13-x86_64-rh7/install_files] $ ./updatefiles.sh
HAAst file copier/updater version 1.5
Verifying/creating directories
Configuration directory [/etc/xdg/telium] already exists
Configuration sensor/sync directory [/etc/xdg/telium/haast.conf.d] already exists
Base directory [/usr/local/haast] already exists
Events directory [/usr/local/haast/events] already exists
Internal directory [/usr/local/haast/internal] already exists
Web directory [/usr/local/haast/web_interface] already exists
Verifying/copying files
Config file [haast.conf] already exists, skipping copy
Executable file [haast] already exists, replacing file in [/usr/local/haast]
Internal helper functions file [helperfunctions.sh] already exists, replacing file in [/usr/local/haast/internal]
Internal release file [release] already exists, replacing file in [/usr/local/haast/internal]
Web interface files already exist, replacing files in [/usr/local/haast/web_interface]
Preserving web settings files [/usr/local/haast/web_interface/settings.php]
HAAst files have been copied/updated
HAAst overwritten with same version 2.3.13
Executable, web interface files have been copied/updated. Configuration files,
service files, event handlers, and sample files have not be installed/updated
