when did you guys apply for FSW express entry, was it before the rules on PCC was changed?My wife had similar case where she stayed in a country for 4 months then came back to her country for 2 months and then went back for less than 6 months to complete her studies. When we finished application in the list of documents PCC for the country was asked. Hence, I'm telling from personal experience that in the case described by OP he will be asked for PCC.