In my custom web data connector, I have this issue where if you initiate a sufficiently large extract, cancel in the middle of it as it's appending data, and then re-extracting it, I end up with duplicates. So it seems the data is not cleared between extracts. Is there some way of clearing it before re-extracting?
Steps to replicate:
1. Drag in a large table
2. Click extract
3. Cancel after it has added some data and before it has completed
4. Click extract again
5. At the end, the amount of rows gathered is larger than the amount that is expected.