How do I save bed leveling mesh data to SD card or Host

Hello all,

I have a Delta. Running marlin bugfix 1.1.x (2 weeks old).
I update the firmware every few weeks or so. The only thing that is a pain is redoing the unified bed leveling fine
tuning - G26. I know I can save the mesh to eeprom.

But If I don't change anything that relates to movement speed, driver settings, bed mesh size, delta printable radius can't the old mesh data be used straight up as is again or at least as a starting point for new firmware unless ubl version changes?

Is there a way to export and import bed mesh data to SD card or host/Octoprint?

Edited 1 time(s). Last edit at 07/20/2018 06:51PM by nuroo.

I know I can use G29 T to view data. That view great as a quick reference table view.
Is there a command that outputs the data as list ?
If so, what command is used to enter the points back into the firmware 1 by 1.

Is there an import export gcode to sd card?

update:
[marlinfw.org]
sets the value. But the format is:
M421 In Jn Zn or M421 Xn Yn Zn
G29 T output a table

What command outputs mesh points like M421 inputs them?

Edited 1 time(s). Last edit at 07/20/2018 06:56PM by nuroo.