[Koha] How to clean Koha imported records?

[Paul A]

At 04:17 PM 4/7/2014 +0300, Layale Bassil wrote:
[snip]
>Thanks a lot for your valuable explanation... well your explained my case 
>perfectly well. I cleaned the data by truncating the needed tables and now 
>I am organizing my holdings into tag 952 as you suggested.

That's fine for the 952s in marc-edit, but in your original request, you wrote

> >> I am running Koha 3.14. I imported several batches for testing
> >> purposes [snip]
> >>
> >> I need to delete all the previously imported records and start a
> >> fresh clean catalogue. Any suggestions would be greatly appreciated.
     ^^^^^^^^^^^^^^^^^^^^^

Having gone through this many dozens of times testing various versions and 
upgrades, I have always found it easier to restore the backup of the 
"virgin installation" of the MySQL dump, and if you did not back it up, 
might suggest that a brand new re-install would get rid of any glitches 
that you possibly may have overlooked in your various "clean ups."

Best -- Paul