Always. At the very least simply because the headaches that accompany those upgrade paths will be significantly bigger once you skip a version or two and finally want to jump to 7.0 or 8.0. Instead upgrade while it's relatively painless.
Always. At the very least simply because the headaches that accompany those upgrade paths will be significantly bigger once you skip a version or two and finally want to jump to 7.0 or 8.0. Instead upgrade while it's relatively painless.