The worksheet '…' already contains data.
Running /stage:export will clear all current contents.
Export replaces the whole worksheet for that repair, so VDJTools asks first. Any fixes you haven’t imported yet would be lost.
What to do #
Answer n to keep what you have.
If it also warns that database fixes haven’t been copied yet, run CrossRef for those repairs before you re-export the database. Once the database is re-exported, those fixes can’t be copied.