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I am encountering a very strange problem. I have assigned a vertex group in my shrinkwrap modifier some time ago. Then I worked with my rig that has a lot vertex groups for my deformation bones. I can see that the vertex group "NoShrink" of the object is assigned in the Shrinkwrap modifier. But I could not find it in the vertex groups of the object data properties. The modifier accepts this non-existing group and works properly. Now I want to change the weights of the vertices in the vertex group but I can't find it. What could have happened? Is it hidden? I have never heard of any way to hide the name of the vertex group in object data properties window. I searched it by typing the name in search box, also I scrolled down manually through all those vertex groups carefully a couple of times and still its missing. But the shrinkwrap modifier has this vertex group assigned to it and shows no error. Please help.

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  • $\begingroup$ The vertex group must be in the object that has the Shrinkwrap modifier, not the target object, is it the case here? $\endgroup$
    – moonboots
    Oct 13, 2023 at 6:23
  • $\begingroup$ No that is not the case here. Its actually the same object. The target object 'head' does not have any vertex groups. Moreover this modifier is on the 'body' object so I will not be able to select any vertex group of the 'head' object. The thing is: The modifier works normally as long as I don't erase the vertex group name in the modifier. Once I erase it I can't add it again. Which means that it does not exist. If I delete all the vertex groups of the object then the modifier shows an error. I do not understand why it does not show its name in the Vertex groups of the object data properties. $\endgroup$
    – RameshRaju
    Oct 13, 2023 at 6:58
  • $\begingroup$ Could you please share your file? Only keep the useful objects blend-exchange.com $\endgroup$
    – moonboots
    Oct 13, 2023 at 7:04
  • $\begingroup$ I have shared the file. I have to delete the target 'head' object too because its huge. But you don't need it. The problem is still the same. $\endgroup$
    – RameshRaju
    Oct 13, 2023 at 7:27
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    $\begingroup$ You must have deleted it accidentally, you can test it yourself, select a vertex group in the Shrinkwrap, then delete it in the Vertex Groups lists, the vertex group will still be displayed in the modifier $\endgroup$
    – moonboots
    Oct 13, 2023 at 8:28

1 Answer 1

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You must have deleted the vertex group accidentally but it still appears in the Shrinkwrap modifier nevertheless. You can test it yourself, select a vertex group in the Shrinkwrap, then delete it in the Vertex Groups list, the vertex group will still be displayed in the modifier. You can't recover this vertex group, you need to recreate it in the Vertex Groups list and assign the vertices you want.

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