Levels won't carry over between multiplayer and the backyard

So I've been playing a lot of Garden Warfare 2 on PC lately but only today have I ran into a big issue. When I gain levels on a certain character in multiplayer matches, the progress doesn't carry into the backyard. For example, I was Elite 7 at the beginning of the day on Mob Cob and got him to level 10 whilst playing on Zomburbia. When I returned to the Backyard however, Mob Cob was back at level 7, and all of the other characters I had played during my session such as Rock Pea, Z7 Imp, and Ice Citron. Is there any way for this issue to be fixed?