Not sure what you mean by "upgrade path", but logistically 3.x does require paying for new license(s). FWIW, I migrated directly from 2.6 to 3.1, bypassing 3.0 and 3.0.1.
The documentation you're looking for is probably something along the lines of "Data Migration Guide for LAN Management Solution 3.1", which lists topics such as "LMS 2.6 or LMS 2.6 Service Pack (SP1) to LMS 3.1":
Python based Script to BULK Import/Delete devices using Cisco Prime API
Check my Repo on GitHub for all the details ( see below link )
ASR9001 DC chassis doesn't prints a syslog incase voltage for one of the Power Modules goes below certain threshold. Because of this the monitoring of PowerModule for any failure becomes difficult. This may cause outage incase of double fa...
16.6.4 Beta Release for Catalyst Switches
Enterprise Switching Business Unit is happy to announce availability of first Beta release of 16.6.4. This will be the first beta rebuild on the 16.6.4 targeted towards Catalyst 9500/9400/9300/3850/36...