Your data should be cleansed before importing into a new system. ultimately it should be cleansed before and after any data is imported into your system from an outside source, and vice-versa if you are putting your data into any other outside source. (we don't know what kind of systems that data has been in, now do we ?) At the very least, if not cleansed, it should at least be protected by some encapsulation coverage to keep any bad, outside viruses or bugs off of it.
Due to the delicate nature of data, cleansing should be performed with a mild detergent solution. Data is, at it's most basic level, comprised of 0's and 1's. Using a small toothbrush can be effective on the 1's, but can be difficult to thouroughly clean out the inside of those nasty 0's. You can wrap a small towellete around the 1's and use it to clean out the inside of the 0's. A gentle in-and-out motion with a slight twisting should do the trick
Bluesky
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