Problem with template when convert from Quote to Invoice

Hello all,
I have a problem when converting from Quote to Invoice.
Now I set the default template for Invoice is Plain+ (modified from Plain).
But all of the times when I convert from Quote to Invoice, the template is change to Elegant.
How can I change default template when convert always Plain+?

Thank you!


You can set the default quote design to use on Settings > Invoice Design.

I already set to Plain+ for Invoice Design, Quote Design, Credit Design but no luck when convert Quote to Invoice.

Maybe you’ve overridden the design setting for the group or client?