DEMI CG

This simple MEL script will :

take the name of the each mesh group (collision + mesh)
snap it to zero world zero location
export it as fbx (using your last export settings)
and zero out you translations after (assuming your transformation were freezed in first place)

string $fbxPath = "C:/Users/yourname/Desktop/"; ///make sure it's / not \
///^^^type the path to files here^^^///

string $selection[] = `ls -sl`; /// List selected

for($item in $selection) {

string $fullTempPath = $fbxPath + $item ; ///create full path + name of the group

select -r $item; ///have the item selected
move -rpr 0 0 0 ; ///move to 0 position
SnapToGrid; dR_enterForSnap;
file -force -options "groups=1;ptgroups=1;materials=0;smoothing=1;normals=1" -typ "FBX export" -pr -es $fullTempPath; ///save the file
setAttr ($item +".translateZ") 0;
setAttr ($item +".translateX") 0;
setAttr ($item +".translateY") 0; /// move back to right position

}

-this way you can organize all of your repetitive meshes in one scene , laying them out anywhere on the grid.Making changes later on would be easier assuming the path of your meshes didn't change , just by clicking Reimport buttom in UE4

Found out that the only way to use 32bit UDIM displacement in maya is to create a network of file nodes , because using actual UDIM setting will remove "negative colors" and your model will only go out not in :(

This script will create a UV UDIM tiles offset each one of them ,turn off UV wrap,allow negative colors , set color space to Linear (for 32bit), connect to default color them in order, filter type mipmap (for tiled .EXRs) and filter to 0.1 .

All you need to change is $ColPatchN and $RowPatchN to size you need to match your UDIMS and attach each texture file to correct number. Maybe I'l update it later if there won't be better solutions for that (or maybe there already is something idn)

Here's the script itself:

//Create Attributes
string $filename = "dFile1_";
string $placerN = "tPlacer1_";
int $tempRow;
int $tFrameU = 1 ;
int $tFrameV = 0 ;
int $RowN = "1001";
int $ColN = "10";
int $ColPatchN = "8"; //number of columns
int $RowPatchN = "2"; //number of rows
int $lastCount = $RowPatchN - 1 ; //number to attach lasr cell from rows
int $secondTime = 0 ; //skip first one

/////////// GUTS //////////////
//////////////////////////////////////////////////////Create loop 1
for ($t1 = 0 ; $t1 < $RowPatchN; $t1 = $t1 + 1 ){
//////////////////////////////////////////////////////Create loop 2
for ($t2 = 0 ; $t2 < $ColPatchN; $t2 = $t2 + 1 ){
//Create ,name ,set attr for file and placement nodes
shadingNode -asTexture file;
rename "temp_01";
setAttr "temp_01.filterType" 1;
setAttr "temp_01.alphaIsLuminance" 1;
setAttr "temp_01.filter" 0.1;
//Allow vray negative colors
vray addAttributesFromGroup temp_01 vray_file_allow_neg_colors 1;
vrayAddAttr temp_01 vrayFileAllowNegColors;
//Texture input gamma
vrayAddAttr temp_01 vrayFileGammaEnable;
vrayAddAttr temp_01 vrayFileColorSpace;
vrayAddAttr temp_01 vrayFileGammaValue;
setAttr "temp_01.vrayFileColorSpace" 0;
//renaming
rename "temp_01" ($filename + $RowN) ;
shadingNode -asUtility place2dTexture;
rename "tempP_01";
rename "tempP_01" ($placerN + $RowN) ;

//Connect placement and file attr
connectAttr -f ($placerN + $RowN + ".translateFrame") ($filename + $RowN + ".translateFrame") ;
connectAttr -f ($placerN + $RowN + ".rotateFrame") ($filename + $RowN + ".rotateFrame");
connectAttr -f ($placerN + $RowN + ".mirrorU") ($filename + $RowN + ".mirrorU");
connectAttr -f ($placerN + $RowN + ".mirrorV") ($filename + $RowN + ".mirrorV");
connectAttr -f ($placerN + $RowN + ".stagger") ($filename + $RowN + ".stagger");
connectAttr -f ($placerN + $RowN + ".wrapU") ($filename + $RowN + ".wrapU");
connectAttr -f ($placerN + $RowN + ".wrapV") ($filename + $RowN + ".wrapV");
setAttr ($placerN + $RowN + ".wrapU") 0;
setAttr ($placerN + $RowN + ".wrapV") 0;
connectAttr -f ($placerN + $RowN + ".repeatUV") ($filename + $RowN + ".repeatUV");
connectAttr -f ($placerN + $RowN + ".offset") ($filename + $RowN + ".offset");
connectAttr -f ($placerN + $RowN + ".rotateUV") ($filename + $RowN + ".rotateUV");
connectAttr -f ($placerN + $RowN + ".noiseUV") ($filename + $RowN + ".noiseUV");
connectAttr -f ($placerN + $RowN + ".vertexUvOne") ($filename + $RowN + ".vertexUvOne");
connectAttr -f ($placerN + $RowN + ".vertexUvTwo") ($filename + $RowN + ".vertexUvTwo");
connectAttr -f ($placerN + $RowN + ".vertexUvThree") ($filename + $RowN + ".vertexUvThree");
connectAttr -f ($placerN + $RowN + ".vertexCameraOne") ($filename + $RowN + ".vertexCameraOne");
connectAttr ($placerN + $RowN + ".outUV") ($filename + $RowN + ".uv");
connectAttr ($placerN + $RowN + ".outUvFilterSize") ($filename + $RowN + ".uvFilterSize");
//Change FrameV
setAttr ($placerN + $RowN + ".translateFrameV") $tFrameV;
//attack 1002 to 1001 no so on
if ($secondTime > 0 )
{
int $prevRow = $RowN - 1;
defaultNavigation -ce -source ($filename + $RowN ) -destination ($filename + $prevRow + ".defaultColor");
setAttr ($placerN + $RowN + ".translateFrameU") $tFrameU;
$tFrameU = $tFrameU + 1;
};
//count if second time
$secondTime = 1;
//name next one
$RowN = $RowN + 1;
};
//reset second time for next row
$secondTime = 0;
//Create new row
$RowN = $RowN - $ColPatchN;
$RowN = $RowN+$ColN;
//reset frame in U
$tFrameU = 1 ;
//Change frave in V
$tFrameV = $tFrameV + 1 ;
};
//Attach last cell to new row
$RowN = "1001";
int $changedROW = 0 ;//add if row changed
for ($t3 = 0 ; $t3 < $lastCount; $t3 = $t3 + 1 ){
defaultNavigation -ce -source ($filename + ($RowN + $changedROW + 10)) -destination ($filename + ($RowN + $ColPatchN + $changedROW - 1) + ".defaultColor");
/// 1001 + 0 + 10 1001 + 6 + 0 - 1
$changedROW = $changedROW + 10 ;
};