7D2D: Incomplete backup

[irobot73]

Executing ./*server backup completes successfully, but does not capture any server or .local\user data ('save') files/folders. NOTE: The log does show the system recognizes there is a substantial amount of data

Jul 22 15:35:05.972 sdtdserver: STOP: PASS: Stopped My Game Host
Jul 22 15:35:05.976 sdtdserver: BACKUP: INFO: Lockfile generated
Jul 22 15:35:05.978 sdtdserver: BACKUP: INFO: /app/lgsm/lock/backup.lock
Jul 22 15:35:06.481 sdtdserver: BACKUP: INFO: A total of 15G will be compressed: /app/lgsm/backup/sdtdserver-2023-07-22-153452.tar.gz
Jul 22 15:35:06.985 sdtdserver: BACKUP: INFO: backup 15G sdtdserver-2023-07-22-153452.tar.gz, in progress
Jul 22 15:35:08.032 sdtdserver: BACKUP: PASS: Backup created: sdtdserver-2023-07-22-153452.tar.gz, total size 132K
Jul 22 15:35:08.828 sdtdserver: START: INFO: Using anonymous Steam login
Jul 22 15:35:09.565 sdtdserver: START: INFO: Rotating log files

Didn't matter if I used the 'basic' volume (cfg below) for '/data' or custom volume redirects (comment './test' & un-comment the rest). Both game me the same, small/incomplete backup

services:
  linuxgsm-sdtd:
    image: gameservermanagers/gameserver:sdtd
    # image: ghcr.io/gameservermanagers/gameserver:sdtd
    container_name: 7d2dserver
    restart: unless-stopped
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /etc/timezone:/etc/timezone:ro

      - ./test:/data
     # - ./svr:/data/serverfiles
     # - ./userData:/data/.local/share/7DaysToDie

     # - ./linuxgsm/log:/data/log
     # - ./linuxgsm/cfg:/data/config-lgsm/sdtdserver
      - ./linuxgsm/backup:/app/lgsm/backup
    ports:
      - 26910:26900/tcp             # PC
      - 26910-26915:26900-26905/udp # PC (added few 'extra' ports to CYA)
                                    #    [added more ports via https://7dtd.illy.bz/wiki/Ports]
      - 8093:8083/tcp               # OPTIONAL WEBADMIN  [NOTE:  match server's CFG file]
      - 8094:8084/tcp               # OPTIONAL TELNET    [NOTE:  match server's CFG file]
      - 8095:8085/tcp               # OPTIONAL WEBSERVER https://7dtd.illy.bz/wiki/Server%20fixes
      - 8097:8087/tcp               # OPTIONAL WEBSERVER https://github.com/dmustanger/7dtd-ServerTools

Comparing newer (left @ 133.6KB) vs. older (right @ 12GB) Docker image output :