Cura 5.5.0 Not Working with Makerbot Replicator 2X Using Custom FFF Printer

[Art92240]

I have followed some cura threads and changed the metadata in the "printer.global.cfg" to include the file_formats and machine_x3g_variant as shown below.

version = 6
name = Replicator 2X
id = Replicator 2X

[metadata]
setting_version = 22
manufacturer: MakerBot
file_formats: x3g
machine_x3g_variant = r2x
type = machine
group_id = 705d1fd4-41b8-496f-aaa3-826ddb2448c0

[containers]
0 = Replicator 2X_user
1 = empty_quality_changes
2 = empty_intent
3 = normal
4 = empty_material
5 = empty_variant
6 = Replicator 2X_settings
7 = custom

However, when I click "save to removeable drive", cura saves it as gcode:

[35m2023-12-19 11:59:07,325�[0m - �[36mDEBUG�[0m - �[37m[MainThread] RemovableDriveOutputDevice.RemovableDriveOutputDevice._performWrite [98]: Writing to E:/xyzCalibration_cube.gcode�[0m
[35m2023-12-19 11:59:07,363�[0m - �[32mINFO�[0m - �[37m[JobQueueWorker [7]] GCodeWriter.GCodeWriter._serialiseSettings [182]: No custom settings found, not writing settings to g-code.�[0m
[35m2023-12-19 11:59:07,363�[0m - �[36mDEBUG�[0m - �[37m[JobQueueWorker [7]] UM.FileHandler.WriteFileJob.run [80]: Writing file took 0.010156631469726562 seconds�[0m
[35m2023-12-19 11:59:08,257�[0m - �[32mINFO�[0m - �[37m[MainThread] SliceInfoPlugin.SliceInfo._onRequestFinished [315]: SliceInfo sent successfully�[0m

Any help is appreciated.