Does Infoworks reads the masked data from the source and pass the same to the target system?
Can Infoworks unmask the data present in the target?

Let's say you have an SSN number in your data and the first few digits are masked on your source system. Infoworks would read it the same way and ingest it to the target system. Infoworks will consider this as a string and ingest it in the same way into the target.