XGen Root UV Unreal Engine Script error

[zamielbrink]

I've seen many a post about this particular script float around here, but I can't seem to find a proper workaround.  I am attempting to follow the guide in this video https://www.youtube.com/watch?v=IpSVbYveTQA about exporting my rootUV groom.  However, I find that upon their import of their alembic file, all of their curves are merged as one, in the video it's shown as SplineGrp0.  Contrarily, upon importing my alembic file, each individual curve is defined, as in ShirtFront:Spline0, ShirtFront:Spline1, and so on and so fourth all the way up to ShirtFront:Spline6475.  Grouping the curves and assigning that name to the script ensures that the script does not recognize any of the curves and therefore cannot export.  I have found that there is a rather hacky way of merging all of the curves by changing the outliner display options and then merging them that way, but that method still requires the interacting of each individual curve to make the method possible.   I am using python version 2 with the script, so I don't believe that to be the issue.  Is there an option that can allow for all of the curves to be one object in the outliner upon import as the video shows?  I will provide the entire script here, thank you in advance for your assistance. 

from maya import cmds
from maya import OpenMaya
import os

def create_root_uv_attribute(curves_group, mesh_node, uv_set='UVMap'):
    '''
    Create "groom_root_uv" attribute on group of curves.
    '''

    # check curves group
    if not cmds.objExists(curves_group):
        raise RuntimeError('Group not found: "{}"'.format(curves_group))

    # get curves in group
    curve_shapes = cmds.listRelatives(curves_group, shapes=True, noIntermediate=True)
    curve_shapes = cmds.ls(curve_shapes, type='nurbsCurve')
    if not curve_shapes:
        raise RuntimeError('Invalid curves group. No nurbs-curves found in group.')
    else:
        print ("found curves")
        print (curve_shapes)

    # get curve roots
    points = list()
    for curve_shape in curve_shapes:
        point = cmds.pointPosition('{}.cv[0]'.format(curve_shape), world=True)
        points.append(point)

    # get uvs
    values = list()
    uvs = find_closest_uv_point(points, mesh_node, uv_set=uv_set)
    for u, v in uvs:
        values.append([u, v, 0])
        #print (str(u) + " , " + str(v)  )

    # create attribute
    name = 'groom_root_uv'
    cmds.addAttr(curves_group, ln=name, dt='vectorArray')
    cmds.addAttr(curves_group, ln='{}_AbcGeomScope'.format(name), dt='string')
    cmds.addAttr(curves_group, ln='{}_AbcType'.format(name), dt='string')

    cmds.setAttr('{}.{}'.format(curves_group, name), len(values), *values, type='vectorArray')
    cmds.setAttr('{}.{}_AbcGeomScope'.format(curves_group, name), 'uni', type='string')
    cmds.setAttr('{}.{}_AbcType'.format(curves_group, name), 'vector2', type='string')

    return uvs

def find_closest_uv_point(points, mesh_node, uv_set='map1'):
    '''
    Find mesh UV-coordinates at given points.
    '''

    # check mesh
    if not cmds.objExists(mesh_node):
        raise RuntimeError('Node not found: "{}"'.format(mesh_node))

    # check uv_set
    uv_sets = cmds.polyUVSet(mesh_node, q=True, allUVSets=True)
    if uv_set not in uv_sets:
        raise RuntimeError('Invalid uv_set provided: "{}"'.format(uv_set))

    # get mesh as dag-path
    selection_list = OpenMaya.MSelectionList()
    selection_list.add(mesh_node)

    mesh_dagpath = OpenMaya.MDagPath()
    selection_list.getDagPath(0, mesh_dagpath)
    mesh_dagpath.extendToShape()

    # get mesh function set
    fn_mesh = OpenMaya.MFnMesh(mesh_dagpath)

    uvs = list()
    for i in range(len(points)):

        script_util = OpenMaya.MScriptUtil()
        script_util.createFromDouble(0.0, 0.0)
        uv_point = script_util.asFloat2Ptr()

        point = OpenMaya.MPoint(*points[i])
        fn_mesh.getUVAtPoint(point, uv_point, OpenMaya.MSpace.kWorld, uv_set)

        u = OpenMaya.MScriptUtil.getFloat2ArrayItem(uv_point, 0, 0)
        v = OpenMaya.MScriptUtil.getFloat2ArrayItem(uv_point, 0, 1)

        uvs.append((u, v))

    return uvs

def abc_export(filepath, node=None, start_frame=1, end_frame=1, data_format='otawa', uv_write=True):

    job_command = '-frameRange {} {} '.format(start_frame, end_frame)
    job_command += '-dataFormat {} '.format(data_format)

    job_command += '-attr groom_root_uv '

    if uv_write:
        job_command += '-uvWrite '

    job_command += '-root {} '.format(node)   

    job_command += '-file {} '.format(filepath) 

    cmds.AbcExport(verbose=True, j=job_command)

def main():

    export_directory = 'C:\Users\zamie\OneDrive\Desktop\BBFacialHairtest\Fray'
    hair_file = os.path.join(export_directory, 'FinalGarm.abc')
    curve_top_group= 'ShirtFront1|ShirtFrontGroup'
    uv_mesh='Fit'

    create_root_uv_attribute( curve_top_group , uv_mesh)
    abc_export(hair_file, curve_top_group)

main()