Been using both designer and photo for about 2 years, to replace Photoshop mainly. While mostly great, some features are missing for vectors which makes layers

Been using both designer and photo for about 2 years, to replace Photoshop mainly. While mostly great, some features are missing for vectors which makes layers broken down into tiny bits instead of groups. The only way to solve it is to open the file in illustrator and save it as an .ai file to fix it. I've been told it works in Corel draw as well.