IBM names three Maximo Asset Management levels you can upgrade to Maximo Manage from: 7.6.0.10, 7.6.1.2 or 7.6.1.3
Before you can move classic Maximo Asset Management to Maximo Manage in Maximo Application Suite, IBM requires the source system to be at 7.6.0.10, 7.6.1.2 or 7.6.1.3. Any other level (7.6.1.0, 7.6.1.1, 7.6.0.9 and below) has to be fix-packed to one of those three first. That fix pack is upgrade work in its own right, so price it into the move.
The IBM upgrade checklist for Maximo Application Suite states, under "Before you upgrade": "Ensure that you have Maximo Asset Management 7.6.0.10, 7.6.1.2, or 7.6.1.3 installed." The same section adds, for IBM Control Desk: "For IBM Control Desk, ensure that you have IBM Control Desk 7.6.1.5 and Maximo Asset Management 7.6.1.3 installed, to upgrade to Maximo Manage and Maximo IT." So 7.6.1.3 is the required Maximo Asset Management level on the Control Desk to Maximo IT route, while the three-level list covers the move to Maximo Manage generally. 7.6.1.3 is the last 7.6.1 fix pack, so a site fix-packing forward today lands on it.