By default, Jira Workflow Toolbox ephemeral fields are automatically deleted at the end of each transition.
The current post-function is used to inhibit this automatic erasure mechanism only for the current transition, this way we are making current values of ephemeral fields available for the next transition triggered in the workflow.
Ephemeral field values are volatile since they are stored in the server's memory, and not persisted in the Jira database, unlike custom fields. They should only be used as temporary storage of values within the same transition, or a series of transitions automatically executed in sequence. This post function is intended to be used in this second case, in order to share ephemeral field values between different transitions of the sequence, otherwise, values will be wiped out at the end of each transition.
No further configuration is needed for this post function.
