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If you are using automated exports / import where files are sent to server by HAL package timed events, you do not have to upload files - they will show in Source files section automatically, just check if they show up in Souce files and are recognized as Hansaworld format. HansaWorld format. Then move to Source application section below.
If some of registers register files are mising missing or not recognised - recognized, please check our documentation - How to setup Timed events correctly.
For manual file export / import - In the flex.bi interface you have to find the tab Source Data > Source Files and upload the register files you prepared previously with "Browse ". If files after upload are recognized as HansaWorld files then you will see the HansaWorld logo appear under each file name. Result table should look like this or similar :
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