I am using a fresh install of MT5.04 and want all existing entries, archives, pages, etc. to have a longer filename - i.e., Basename Length of 250. I know this will break links but that is OK.
I found the EntrySetBasename MT4.x plugin by Brad Choate:
http://plugins.movabletype.org/entrysetbasename/
But nothing for MT5.
Will the EntrySetBasename plugin work with MT5? Is there something else that can be done?
Or, is there a way to export entries from my MT4.23 installation and have the Basename for each entry be 250 instead of what it currently is? I would be willing to delete current entries from the MT5 installation and import the modified MT4 export file.
Thank you!
-Cheryl
Reported on Movable Type 5

Hi Cheryl,
I would expect Brad's plugin to work also with v5.x
Go ahead and try out his plugin on your v5.04 installation.
Kind Regards,
Mihai Bocsaru
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Thank you, Mihai. I did give the EntrySetBasename plugin a try with my MT5.04 installation, but the plugin produced the following error and the administrative interface would no longer work until the plugin was deleted from the server:
Got an error: Error reading /home/username/public_html/cgi-bin/mt5/plugins/EntrySetBasename_v1.0/config.yaml: Syck parser (line 21, column 18): syntax error
So, instead, I created an index template using the entry export file format, changed the BASENAME field to use EntryTitle (removed all hyphens, dirify-ed, replaced spaces with underscores, and trimmed length to 250). I backed up the blog entries (for safe keeping), published the template to create the output file (which was an export of all published entries - it did not include unpublished entries), deleted all entries from the blog, and then imported the output file.
Worked like a charm!
-Cheryl