Revert "temporarily disable migration for new index"
Revert "temporarily disable migration for new index"

This reverts commit 83a5e9a72aed134d117c096d02dbf1095d762a8e.

msingh05/lagotto,mfenner/lagotto,articlemetrics/lagotto,mfenner/lagotto,ankurpohekar/Lagotto,msingh05/lagotto,ankurpohekar/Lagotto,mfenner/lagotto,ankurpohekar/Lagotto,lagotto/lagotto,msingh05/lagotto,articlemetrics/lagotto,ankurpohekar/Lagotto,CrossRef/lagotto,CrossRef/lagotto,lagotto/lagotto,lagotto/lagotto,articlemetrics/lagotto,CrossRef/lagotto,ankurpohekar/Lagotto,ankurpohekar/Lagotto,ankurpohekar/Lagotto