It's bad, I got resume request on Feb 23 too, search the key words in this forum, very few people got this, most got about 6 month more processing time than normal.My friend had this change in her file on Feb 27! The same day, she got BGIP. yesterday (March 8), she was asked for her CV to go for a deep security check!!!! BTW, it is hard to say that it is good or bad.
So far it's nor clear in what situation will this happen. There're cases for AINP, OINP, people from different countries, with different occupations.