I had made a change in the questionnaire. Now the data is missing for the whole set

When downloading data questions are missing. I had made a change in the questionnaire . Now the data is missing for the whole set .This is a survey of 15000 households . When i downloaded the data at 8000 it was showing the data for both the questions.Now we are at 12000 and whe i download the data it is showing blank

Welcome to the community, @rohitiimad! Have you gone through this post discussed previously? It should help you solve your issue: