Do Not Switch the Default Tool Until Old Ids Still Resolve

Implementation checklist for plasmid-design software cutover is a go-live hold, not a file-copy tutorial. Cutover is the moment the default tool changes. Do not switch that default until old plasmid IDs still open the same maps, interchange files still parse, and a named person can roll the default back. Migrating plasmid files is the move that should already be done. Open versus proprietary formats names the file classes. This page only decides Monday.

Do Not Switch the Default Tool Until Old IDs Still Resolve

The search is cutover checklist for plasmid design software. Keep the hold. An ID that resolved last Friday — pMYC-014, Addgene 52961, the core’s local accession — must still resolve after the new tool is the default. If the new canvas is prettier and the old ID 404s, the cutover failed. A filename that changed during migration is not an ID. Provenance fields on the provenance page are the story. This page asks whether those identifiers still find a map.

Prefer a Monday that a night-shift technician can survive without asking who invented the new IDs. Reject a go-live that assumes everyone will search by construct nickname. Official product pages can describe a workspace that stores maps. They do not make a cutover safe. Golden Gate is not a Zetta feature on those pages, and it is not a reason to switch the default.

Run Identity, Interchange, and Rollback in Order

1. Freeze the identity list. Export the IDs that must survive: local accessions, vendor IDs, and the filenames people actually type. If an ID has no owner, assign one before you continue.
2. Confirm interchange copies exist for every ID on that list. A vendor-only project file without a GenBank or FASTA companion is not ready for a default change. The format page owns the class names. This step only checks that the interchange file is present.
3. Open a sample of old IDs in the incoming tool, including one map with features, one empty backbone, and one collaborator file. If any ID fails to open or loses the marker or origin name, stop.
4. Name the rollback owner and the rollback action: switch the default back, restore the previous installer, or reopen the old workspace. A rollback that is “we will think about it” is not a rollback.
5. Run one real handoff in the incoming tool: a person who did not design the map must find it by the old ID and export an interchange file.
6. Only then change the default — desktop shortcut, core SOP, or “open in” association. Announce the rollback owner in the same message.
7. Watch the first twenty ID searches. If two or more 404, roll back the same day. Do not wait for a weekly meeting.

The migrate sibling already told you how to copy files. If that copy is incomplete, this walk will fail at step two. Do not use cutover to finish a migration you skipped.

Expected Result and Verification

Expected result: a person who only knows last week’s IDs can open those maps in the new default, see the same named features, and export an interchange file. The rollback owner can reverse the default without a vendor ticket.

Verification: pick five IDs at random from the frozen list and open them after the switch. Compare marker and origin names to the pre-cutover interchange file. Ask someone who did not attend the migration meetings to find one ID. Execute the rollback once in a dry run before Monday, even if you do not stay on the old tool. If any of those checks fail, go-live did not happen. A successful installer is not verification.

A Destination Only After Identity Checks Pass

Name the surviving IDs before anyone debates a brand of destination. ZettaGene can be that destination after the identity checks pass. It is one workspace, not the reason to skip the hold. Official simulation coverage is restriction, Gibson, and homologous alignment. Do not write Golden Gate into the cutover as a Zetta capability. If an old ID still 404s, you do not have a cutover. You have a new canvas and a lost catalog.

Monday after a cutover fails in small ways first. A student types last week’s accession and gets an empty search. A technician opens the map and loses the marker name. Someone exports a file that only the new installer can reopen. Those are identity failures, not training problems. Do not schedule a second training session to hide a broken ID list. Roll back, restore the interchange copies, and rerun the five-ID check. A destination workspace is allowed only after those checks pass again. The hold is the product. The new default is an after-effect.

Frequently Asked Questions

Is migrating plasmid files the same as a software cutover?

No. Migration moves files. Cutover changes the default tool after identities still resolve.

What if an old plasmid ID 404s after the switch?

The cutover failed. Roll back the default. Do not declare go-live.