JUKI FM760L smt placer - How to delete unused components

Hi, I have JUKI KE/FM760L SMT placer, and have strange behaviour in software : I am unable to delete unused components/FEEDERS. 1.I go to placement data, I create 2 records say 0805 and 0603. 2. Then I go to Component Data and I see 2 compoennts are created : 0805 and 0603. I fill up the data. 3. Then go to "Component Pick" I create 2 feeders, each for 1record. Save it. 4. Then I want to delete the 0603 for example, I go to Placement data, and delete that record from placement. When I try to delete any of the records from "Component data" or "Component pick" I am facing error with no additional description of "why" : "Unable to delete". I do understand that it is not possible to delete as the 2 records in component data and placement data are connected together (and they are blocking each other deleting process), even they are not used anymore in placement data...... BUT how should I then DELETE IT?..there must be a way, for sure, but after sevral hours still did not figure it out. ANY HELP will be highly appreciated. THANKS

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