[MC-130801] heads not saving in saved tool bar when moveing from 1.12

Environment

in the latest snapshot player heads in saved toolbar dose not work in latest pre release when i go to the new snapshot from 1.12 or a earlier snapshot from 18w22a so i can not bring heads from 1.12 to pre release 1

Linked issues

duplicates 1

MC-130200 Items in saved creative toolbars upgrade improperly from 1.12.2 to 1.13-pre1 Resolved

Comments 1

migrated 2018-06-04T21:21:47Z

Please attach the crash report ([minecraft|http://hopper.minecraft.net/help/finding-minecraft-data-folder]/crash-reports/crash-<DATE>-client.txt), otherwise we can not diagnose this issue.
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