I am using a copy of an old project to make a new project in S7. When I completed the old project I did an Achive to a single file. Then I unzipped it to a new directory to start my new project. It looks like everything is there but now some of the ladder rungs are in STL. I can't seem to get them to change back to ladder. I don't know if this is something I have done or if it could be the S7 updates that I have added. Anyone else have this problem?