Seeking help managing Aperture libraries
I may have erred in how I originally set up my Aperture library. I now have about 20K images totaling over 100G all in a single referenced library. The master files and the library both reside on an external drive. This arrangement is proving inconvenient. I need to be portable and able to work with my photos without having to haul the external drive around. Two reasons: 1) physical space is constrained where I often have to work, and 2) more than once I have had to repair the library after the external drive cable got jiggled and interrupted the connection.
My questions are:
1. How to move the library without losing all my organizational structure (subfolders, projects, etc.) and my info (keywords, captions, etc.) that are currently in the referenced library on the external drive. I have seen some other forum questions/answers that seem close to my situation, but always slightly different. I am afraid to losing a lot to work if I proceed in haste.
2. I am inclined to spilt the large single library into several smaller ones. Is there a good reason not to do this?
MacBook Pro (13-inch Mid 2012), OS X Yosemite (10.10.4), 500G solid state SATA internal HD