What is the company's rational for this?
To see if the person has changed over the last few years of furlough?
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I believe the rational is so that the company can correct what it has seen as possible problem pilots from before the furlough. More that the company is looking at past attitude and work ethic.
If you didn't have problems in training and didn't have any issues with other employees you'll probably just fine with the interview.
But, if you were "that guy" who's name name kept coming up with other crew members , then you might not have such a good chance with the interview.
This is just my opinion based on experience with other companies.