Apexis Plugin

Somehow I goofed up and put Apexis Plugin on my VeraLite. I have UI7 and have Vistacam PT cameras. Seems to be working but has goof ups occasionally. The plugin has created two devices and they are my cameras. I want to delete the plugin and install vistacam UI6 plugin without goofing up my system. can anyone help? I don’t want to reset cameras and start from scratch if possible. Need to know how to proceed with minimal pain.