Lost synced contacts in my HTC Desire HD

I have synced my contacts with my Google account in my HTC Desire HD. It showed that over 400 contacts synced successfully. But I was not using that Google account as activ. Than I have installed a custom rom to my HTC and added my Google account but my contacts are lost. Where should be those contacts? Where did it synced? Do you have any idea? Update: The rom I have installed is CyanogenMod and I have enabled sync and contacts to display is set to all. The problem is I can't see my contacts in gmail. Before I install new rom I have confirmed in contacts application of HTC that all my contacts synced with my Google account.