Thanks - it would be good if this was mentioned on the report generation page. Interestingly too it is also only the P&L DFB report that has this restriction.
I've just been going through the process of running my year end trading reports and have come across a big issue. Despite requesting a custom report for all closed DFBs from 1st Jan 2017 - 26th Dec 2017, the report only returns closed trades from 22nd Sept 2017 onwards (approx 90 days ago). I also tried to run a report for 2016 trades and this no longer returns any data. Sincerely hope IG haven't deleted any data. Anyone else seeing the same issue?