Can't get GS6 to remember default calendar

[cellomj]

I'm wondering if anyone else is having a similar problem. When I do a Google voice search command to add a Calendar event, my GS6 keeps asking which program I'd like to use to save the event.

When I first got the phone, it would renember and use the calendar app I selected the last time I did an entry. Check out my screenshots and let me know if I'm doing something wrong.

Thanks in advance!