Thanks  for the recommendations, Tim.  We've run some tests and are 
retrying the restoration now, will let you know how it goes!


On Thursday, October 3, 2024 at 11:17:45 AM UTC-4 DSpace Technical Support 
wrote:

> Hi Carolyn,
>
> Yes, "force replace" might be your best option here.  That warning is 
> there because it *does destroy* in DSpace that is found to be duplicative.  
> So, if you force replace a Collection, then it will overwrite everything in 
> that Collection (even group memberships/permissions) based on what is in 
> the AIP.  Same with Items, it will overwrite everything on the existing 
> item (metadata, files, even permissions) based on what is in the AIP.
>
> Ideally, you would find a way to *test* the process beforehand to ensure 
> you don't accidentally destroy something you wanted to keep.  But, since it 
> sounds like you are only going to "force replace" the objects that were 
> *wrongly* restored, hopefully that won't be a problem.  Though, I guess you 
> could consider testing the force replace on a *single* Item or a handful of 
> Items to make sure it fixes the problems you are hoping to fix.
>
> Tim
>
> On Thursday, October 3, 2024 at 9:42:02 AM UTC-5 Carolyn Sullivan wrote:
>
>> Hello everyone,
>>
>> A collection was accidentally deleted in our repository and we've 
>> restored it using an AIP (see this thread 
>> <https://groups.google.com/g/dspace-tech/c/uspAAoD9hK4/m/JsciwqDyAAAJ> 
>> for Part I of this adventure).
>>
>> Tragically, when the collection was restored, new handles and internal 
>> ids seem to have been assigned to all the items.  As a result, DOIs 
>> assigned to the items no longer resolve and the statistics history for 
>> these items has disappeared.
>>
>> Our systems analyst believes we can get back the old handles and related 
>> statistics using Force Replace mode: 
>> https://wiki.lyrasis.org/display/DSDOC7x/AIP+Backup+and+Restore#AIPBackupandRestore-ForceReplaceMode
>>
>> However, we see this has a significant warning attached, a la 'because 
>> this mode actually destroys existing content in DSpace, it is potentially 
>> dangerous and may result in data loss!'  I assume we'd lose any 
>> modifications made to items since the creation of this AIP that are 
>> included in both this collection and a non-deleted collection.  Are there 
>> any other issues we need to be aware of in running this mode?
>>
>> Crossposting to DSpace Slack.
>>
>> Thanks,
>> Carolyn.
>>
>>

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