Its a good idea to attend so you know what is happening.
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You will learn anything a\t the meeting of creditors, but it never hurts to attend. Perhaps you can speak to the trustee about your problem. Gather any records that you may have and bring them to the meeting.
What you also is gather your pay stub records. Hopefully you were paid by check, and hopefully you deposited your check into an account rather than simply cashing them. There will be copies somewhere. This may help you with IDES.
There seems to be a lot to this that needs to better understood. Regarding the whole payment situation, you should be promptly advised about the employment law aspects. If you feel the employer misrepresented your pay, you may have a claim and you need to protect that. Also, it is unlikely you will get far disputing the unemployment overpayment without help. There may be short deadlines that would have to be met within the bankruptcy to protect your interests.
Concerning the Meeting of Creditors, it is likely that an attorney appearing for you or reviewing the court documents will do more for you than your trying to appear, but you being there would be better than nobody appearing. You should take some time to prepare so you can better state questions about what happened.
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