Why? You created two for some reason. Do not delete till the reason for having two goes away.
99.9% of my files are imported. Indexed files too much trouble. Indexed v Imported discussed extensively and repeatedly on this forum. Perhaps read those posts if you still are undecided.
as I said before…
Duplicates don’t create themselves. Why do you have these duplicates to begin with?
Of course it was my fault, but NOW this is my situation…
Are you creating duplicates instead of replicants?
I’ll push back a bit.
Importing creates a fully self-contained package of your documents and data. By being fully self-contained, it is portable. But also, by being fully self-contained, it has absolutely no connections to its original source material that was (and may still be found) at the Finder level, and it will never have those connections again at any time. To use an analogy, all wires and any assembly between the content that you import into DT and its source content that existed and may still exist on your computer or on another device are completely and permanently cut.
The “no dangling wires or …” leads to the implication that indexing, by inverse reasoning, is a rat’s nest of dangling wires. And that severing the connections is all everyone should ever want all the time.
Which is by the way not to say that indexing, if not done with care, will never cause a rat’s nest of dangled wires. 
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JJW
Better practice is relative. What is “better” for me or anyone else here may be total disaster for you. Please consider answering these questions.
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JJW
It was a genuine question, not criticism.
There are valid reasons to have duplicates. I don’t want to give suggestions on what you can delete when I don’t understand if the duplicates have a purpose.
What is your situation? It’s not clear to me.
For me there are the following points why I decided to have my documents indexed and not imported.
In addition, I haven’t found an advantage I could gain if I switched to importing which compensates for the points above.
Can you give an example of these “connections”
My situation is the one examplified by this screen shot
I have many instances of the same files (imported or indexed) and I dont know how to get rid of the less important among them
The emphasis is, importing creates a self-standing copy. The copy in DT and the source in the Finder have no (automatic) idea about what happens to each other’s subsequent history. And they never will.
By another analogy, the process of importing is like making a copy of your birth certificate, putting away your original birth certificate (at the Finder level), and taking the copy to a consulate (into DT) to apply for a visa or passport.
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JJW
As with @troejgaard (and perhaps others), my confusion remains. What does “less” important versus “more” important mean to you? Are you asking this forum to make that decision for you? Or are you asking this forum to explain how to remove a file safely if it is indexed versus how to remove a file safely if it is imported?
We cannot help you in the first case. We can only give suggestions (questions) to help you decide for yourself what is and is not important. See my previous list. We can help you in the second case.
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JJW
It’s unwise to keep multiple working copies at different locations
Of course edits will cause differences
If you’re importing files to DT; delete the original
As has been said many times before, there’s no reason to leave the original file lying around outside DT after importing.
If you do, you can’t expect it to reflect changes you make in DT.
Same as annotating a book. These annotations will not appear in any other copy of the book. Fortunately.
exactly this, please show me these two ways… thanks
In summary, the message being promoted is as follows:
After importing files into DT, delete the originals at the Finder level. From that point on, always use DT to access those files.
Am I right that this is the core lesson about importing files into DT?
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JJW
Except for very specific circumstances, yes that’s what we recommend with files imported from the Finder. Also, it seems to be the most prevalent, intuitive behavior of our users as well.
Perhaps my english is not enough clear…
in DT I have the same files indexed and imported…
Can I get rid safely of the indexed ones?
… therefore keeping only the imported?
Stating it as these four steps might be clearer.
I already understood this. I remain concerned that others (e.g. first time users) might not appreciate the nuances covered by each step, and that glossing over them (e.g. as though importing should be the blissful default for all times) only compounds a potential for confusion (e.g. lost files or “why can’t I find it in the Finder anymore” questions).
Thanks.
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JJW
