KB: ODB++ 출력에서 도금된 비아 백드릴을 비도금으로 변환

Solution Details

First, check with your fabricator. They may prefer to make the changes for you.
However, if you need to change the VIA type to NON-PLATED, this shows you how to determine which Drills need to be modified and to which files changes are required.

In the generated ODB export folder, via types are defined in a file named Tools.
These are contained in a Drill folder corresponding to the drill range.  

The Drill folders are named Drill#, where # is a sequential integer numbering of each folder (except the first is just named Drill). Drill folders are located here: 

<path>\odb\steps\pcb\layer\Drill*

To determine which Tools files need editing, it is necessary to examine the Drill pair definitions in the Matrix file here:

<path>\odb\matrix\matrix\matrix

Edit the matrix file in a text editor. For the Drill layers, the "Layer{}" section will contain a Type=Drill, and Name= and list the start and end names. Backdrills have an extra property called ADD_TYPE=BACKDRILL, which makes it easier to determine which Drill names you will need to modify.

For example:
LAYER {
    ROW=25
    CONTEXT=BOARD
    TYPE=DRILL
    NAME=DRILL1
    POLARITY=POSITIVE
    START_NAME=_L01__TOP_LAYER
    END_NAME=_L03__SIGNAL
    OLD_NAME=
    ADD_TYPE=BACKDRILL
}

Here, the Drill has a name of DRILL1, and this will be the corresponding folder name in the Layer folder.
Make a list of all the Drill name for the LAYER {} that contain BACKDRILL ADD_TYPE

To modify the corresponding tool file, you would edit the tools file here:

<path>\odb\steps\pcb\layer\Drill1\tools

In the tools file, it is necessary to change the Via Type to Non_Plated.

E.g., Edit the file, find:
    TYPE=VIA
and change to:
    TYPE=NON_PLATED

Take care to only change Blind Vias that are back drills, as determined earlier.