UV Outfit - Merge - addon for Blender 2.8x
This Blender addon allows to merge multiple UV layers into a single one. In case a model is imported from another 3d application into Blender, generally this model inherit another name of UV layer(s) (UVW, UVSet, UVTexture etc). When such models are joined the resulting model contains two or more UV layers with different names. The UV Outfit - Merge addon will help you to resolve this issue.
Please make sure that every mesh segment is unwrapped only on a single UV-map, If a segment is unwrapped on several maps the merged map may not contain the desired layout for such segments. Soon we will provide an update which will help You to diagnose and resolve these issues.
Others helpful addons from our team.
Uv-Outfit – Tile-displace - This Blender addon allows to displace UV islands for random position along x, y, or random axises.
Wlock Pro - An Addon Which Allows To Lock 3d View Rotation.
B-rename - An addon, which will help you to speed up the renaming of the objects for baking.
Emg (Edit Mode Guard) - Will show you a warning window if you accidentally press the TAB button to enter in edit mod, during work to very poligonal model (for example - 1 000 000 vertices)