Problem: package names are being modified

[jrwdunham]

Expected behaviour

When a transfer contains a package and that package is extracted by Archivematica and the original package is not deleted, then the package should not be renamed.

Current behaviour

Currently, in the above-described scenario, the package is being renamed. This is due to changes introduced by artefactual/archivematica#1178. These changes need to be undone while still maintaining the fix that that PR was targeting.

Steps to reproduce

Create an AIP from a transfer containing a package and choose to extract packages and not delete them. The final AIP will contain the original package but with a date suffixed to its filename.

See this comment: #116 (comment)

Your environment (version of Archivematica, OS version, etc)

• AM qa/1.x
• SS qa/0.x

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