Simple...
Open Axe-Edit and click on axe manage button.
A simple way to visually see what is goin on is create a new window in axe-manage (view > new view > "your source location") and then click (window > docked) and you will have side by side windows. I set the left window to the bank you wish to write to and the right window to the folder on my desktop with the dowloaded presets on the right.
Right click the preset in the right window and drag and drop it to the location on the left window you wish to overwrite. It will place it there with a red icon meaning you have moved it in Axe-Edit but not saved it physically to the II. If you want to then save it to the II you right click on it and choose send to axe fx > selected presets. You can drag and drop single presets or multiples. The icon(s) will turn green when physically placed.
There are many ways to do what you wish. This is just my simple approach that also gives a visual representation as you do it.
^^^
What they said... also the could be a volume block involved that maybe uses an external controller. What patches are you having an issue with?
There is a Violin Patch that I downloaded from the forum that has no volume.