Yes, that tends to be how things work. If you use something to store things, then take it away, the things stored within usually go as well
I didn't use my email addy to store things or associate my phone contacts to it, it was simply just another, 1 of 4, email addresses linked to my phone. To remove it as it hadn't been used for 7 months or more and then lose every phone contact without any warning that it was going to remove everything, is, well, very poor technology IMHO.