upstream changelog:
UPGRADING FROM 3.8.5 and earlier - Changes:
You can now forward an entire Ticket history (in addition to specific
transactions) but this requires a new Template called forward ticket.
This template will be added when you run.
/opt/rt3/sbin/rt-setup-database --dba root --prompt-for-dba-password --action upgrade
Custom fields with categories can optionally be split out into
hierarchical custom fields. If you wish to convert your old
category-based custom fields, run:
perl etc/upgrade/split-out-cf-categories
It will prompt you for each custom field with categories that it
finds, and the name of the custom field to create to store the
categories.
If you were using the LocalizedDateTime RT::Date formatter from code
and passing a DateFormat or TimeFormat argument, you need to switch from
the strftime methods to the cldr methods (ie full_date_format becomes
date_format_full)
You may have done this from your RT_SiteConfig.pm by using
Set($DateTimeFormat, { Format => 'LocalizedDateTime', DateFormat => 'medium_date_format' );
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