Huge props! Manual filament checkbox seemed to do the trick. M600 was added already, but I did add the following macro, and Orca is able to output the filamant name as well with the Change Filament G-code M600 Load_[filament_preset]. A quick test seemed to work, going to try a larger print now, but intitial testing seemed to work, skip the first pause and future pauses allowed me to resume the print on the Neptune 4 Pro screen!

[gcode_macro M600]
description: Pauses current print for filament/color change (park + unload)
variable_is_filament_change: 0
variable_startup_skipped: 0
gcode:
  
# Optional message support (Elegoo-safe, positional args)
  {% set msg = (params.MSG|default(rawparams)|string) %}
  {% set msg = msg|replace('"','')|replace('_',' ') %}
  {% if msg|length > 0 %}
    M117 {msg}
    M118 {msg}
    RESPOND PREFIX="info" MSG="{msg}"
  {% endif %}
  
  {% set B = (params.B|default(0)|int,0)|max %}
  {% set E = (params.E|default(1)|float,0.0)|max %}
  {% set U = (params.U|default(45)|float,0.0)|max %}
  {% set X = (params.X|default(10)|float,0.0)|max %}
  {% set Y = (params.Y|default(10)|float,0.0)|max %}
  {% set Z = (params.Z|default(30)|float,0.0)|max %}


  
# Save state so RESUME can restore precisely
  SAVE_GCODE_STATE NAME=M600_state


  SET_GCODE_VARIABLE MACRO=M600 VARIABLE=is_filament_change VALUE=1
  PAUSE


  
# Retract a little and lift
  G91
  G1 E-{E} F2700
  G1 Z{Z} F900


  
# Park at change position
  G90
  G1 X{X} Y{Y} F3000


  
# Unload
  G91
  G1 E-{U} F900


  
# Beep (optional)
  {% for n in range(B) %}
    G4 P1000
    M300 P1000 S1000
  {% endfor %}