Language Issue in Matrix Questions with Grid style

I am using Nepali language in the form (building it in Kobo). It works fine for the rest. For the matrix question, when I input the columns and rows names in Nepali and deploy the form, it works the first time; but when I would like to edit the form, it says, " Error loading survey: There is an unnamed translation in your form definition. Please give a name to all translations in your form. Use “Manage Translations” option from form landing page."
Then I notice that there is an “unnamed language” automatically added in “Manage translations”. When I remove that from the language list and go back to edit, the matrix-question show up with all the columns and rows names disappeared (originally written in Nepali Language).

When I download the XLS form in either case (before and after deleting the “unnamed language”), the form however is the same!

How can we revolve this issue. I will need a lot of matrix (grid-style) questions written in Nepali language and I may need to edit it at times. The only solution I see now is to build the entire form while praying to the god that I will never have to edit the slightest thing in the whole form!