Convert dbc <=> xlsx - DLC is always reset to it's maximum of 8 bytes

[nexulm]

During the conversion of dbc to xls and vice versa all CAN messages are resetted to max DLC of 8 bytes.

Input;
Standard-CAN dbc

Command used with Ubuntu Linux 22.04:
python3 -m canmatrix.cli.convert "$path/$param_file_wo_extension.dbc" "$path/$param_file_wo_extension.xlsx"

Is there any option I've missed to avoid resetting the current DLC length (i.e. DLC =3) to the max possible DLC bytes of 8?
Since I'm using Canmatrix to convert the DBC, edit the entries in Excel and create an updated DBC from it, the observed behavior is not helpful.

[ebroecker]

same here:
xls(x) is lossy, but you can add additional Attributes:
–additionalSignalAttributes//–additionalFrameAttributes