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upgraded master file is smaller than the original file ...why?

New Here ,
Apr 20, 2020

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My master file was updated/upgraded (for compatibility I believe) and the new catalog file is much smaller than the master. I am not understanding this. I hadn't used LR for a while and am now returning it after some time. 

My project right now is to merge the list of catalogs I have into the Master file. I don't want to delete anything (old catalogs) in case I lose all the data. Screenshot attached of what file size looks like. Any good input/links/videos or directions on how to make sure I don't lose this data? I've already lost my presets I've made in the past and I'm so sad about that. Thank you!

 

 Screen Shot 2020-04-20 at 7.10.36 PM.png 

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upgraded master file is smaller than the original file ...why?

New Here ,
Apr 20, 2020

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My master file was updated/upgraded (for compatibility I believe) and the new catalog file is much smaller than the master. I am not understanding this. I hadn't used LR for a while and am now returning it after some time. 

My project right now is to merge the list of catalogs I have into the Master file. I don't want to delete anything (old catalogs) in case I lose all the data. Screenshot attached of what file size looks like. Any good input/links/videos or directions on how to make sure I don't lose this data? I've already lost my presets I've made in the past and I'm so sad about that. Thank you!

 

 Screen Shot 2020-04-20 at 7.10.36 PM.png 

TOPICS
Mac, Problem or error

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120

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Apr 20, 2020 0
Most Valuable Participant ,
Apr 20, 2020

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Two possibilities:

 

1. If the older catalog was from version 6 or earlier, then the reduction in size could be the result of a change introduced in LR 7 that compresses Develop's History.  That could sometimes result in as much as a 50% savings.

 

2. I believe catalog upgrades do File > Optimize Catalog, which squeezes out unused blocks in the catalog database that slowly accumulate.

 

[Use the blue reply button under the first post to ensure replies sort properly.]

 

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