This article shows how to synchronize data from a scripted custom field on one side into a text custom field on the other side.
Source side
Add the code below to the Data Filter to send scripted custom field value.
replica.customFields."scripted custom field name" = issue.customFields?."scripted custom field name"
Destination side
Add the code below to the Create/Change Processor to get the value of the scripted custom field as a text.
issue.customFields."text custom field name".value = replica.customFields?."scripted custom field name"?.value?.getAsString()