If I have multiple surveys created in 123 that I would like to have the same particular set of nested questions, is there a way for me to import them from previous surveys?
If you are referring to the design of a survey using Survey123 Connect, you can simply copy and paste questions from one or multiple XLSForms into another. You can access the spreadsheets of your existing surveys by navigating to C:\Users\<username>\ArcGIS\My Survey Designs/<survey name> and then open, copy, paste the desired questions from the existing spreadsheets into a new XLSForm.
I’m not referring to connect, just survey 123.
It sounds like you are desiring the ability to copy answers contained within repeats from one survey to another?
If the survey containing the answers of interest are still within the 'Sent' box of the Survey123 field app, you can click on the survey and select to 'Copy the sent data to a new survey'.
This will transfer all answers from the sent survey (including repeats) to a new survey.
Let me know if this is what you are after, or please clarify.
Not from the field app. When creating a basic survey in 123.
By process of elimination, I deduce that you are then referring to the Survey123 web designer. For this, you can utilize the 'Save As' feature shown in the screenshot captured below. This will create a copy of the existing survey including all questions, which you can then edit as desired.
Retrieving data ...