It seems that there is a feature on the parent proyect (electrum bitcoin) that is not supported on electrum-dash, that is adding OP_RETURN outputs. It is not documented, but it works, see this question for an example.
While this feature might look like irrelevant, all the interactions with the Maya protocol use those outputs, so this is a mayor feature. See the maya documentation.
Currently, when submiting one of those lines, it raises a warning about an invalid line, (Invalid address or script')
It seems that there is a feature on the parent proyect (electrum bitcoin) that is not supported on electrum-dash, that is adding OP_RETURN outputs. It is not documented, but it works, see this question for an example.
While this feature might look like irrelevant, all the interactions with the Maya protocol use those outputs, so this is a mayor feature. See the maya documentation.
Currently, when submiting one of those lines, it raises a warning about an invalid line, (Invalid address or script')