Fantasy LCS' historical data is wrong‏

I started a fantasy league with other family members and just for the sake of having a more analytical approach, I exported the datas each week into a spreadsheet so that I can sort/tweak things as I like. This week, as I was working on that, I realized that CloudNguyen (the guy subbing for Dignitas as jungler) had an estimate for Dignitas first 2 weeks, which made no sense since not only was he not supposed to play, he wasn't even on the roster yet. Since I thought it was simply Crumbzz' estimates being carried over, I thought I'd check Crumbzz' estimates and they were indeed gone. However I realized that Crumzz' and CloudNguyen's estimates weren't the same.

Fast forward a few minutes/hours, I start compiling the estimates for this week and I realize that I had an error on Impact's estimate of the first 2 weeks. I find the intriguing, but fix it and move along. However, it became really clear to me that there was indeed some dark magic going on (aka a bug) since out of the 12 players I checked, I had entered 12 of them wrong, while doing at least 2 checks on all of them.

So yeah, apparently, your guys are changing the estimates for the first weeks after the first weeks, which can range from annoying (having historical data be wrong) to completely absurd (crumbzz having estimates of 0 points for 4 matches... I mean he's not that great but he's much better than that).