Why The Edge of MEC and LEC different between Allen Atlas and Paxinos Stereotaxic Coordinates?

The sagittal atlas at about lateral 3.36 mm of Allen map and Paxinos is:

The Dorsal part of MEC in Paxinos was attributed to LEC in Allen map.
This really troubles my resarch, for we’re preparing for MEC imaging.
Why there’s such difference? Can anyone tell me please?

The sagittal plate you selected is from CCFv2, which was built from 2D by Hongwei Dong. Here I attached a plate at similar sagittal level from CCFv3, which was built in 3D. At this level, you can see that ENTm and ENTl are similar to those in the Paxinos and Franklin’s mouse brain atlas.

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thanks for your help