John1231983 opened a new issue #17944: How to split symbol?
URL: https://github.com/apache/incubator-mxnet/issues/17944
 
 
   I have a symbol that is created by concat between `data`  and `seg` at 
`dim=1`
   ```
   data with shape of 64x3x224x224
   seg with shpe of 64x1x224x224
   ```
   Hence, the symbol has size of `64x4x224x224`. I want to split the symbol 
back to data and seg. How can I do it? This is what I did
   ```
   data_seg  = mx.symbol.split(data=data_seg, axis=1, num_outputs=2)
   data = data_seg [0]
   seg =  data_seg [1]
   ```
   However, the shape of data and seg result in `64x2x224x224` instead of 
`64x3x224x224` and `64x1x224x224`, respectively.

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