When a badge layout is resized it can be done by adjusting the size of the background on either the front or back. Adjusting one will automatically adjust the other. Remember that all data holders must fit within the new size regardless of which side they are on. If they do not, a size will be suggested which will contain them all.
If a badge database was once designed as double-sided but double-sided is turned off, any holders on the back are still considered in this calculation. To avoid any problems in this area, delete all the holder rectangles from the back of the badge before turning off the double-sided feature.