If you simply replaced a "hub" with a switch, you won't have a vlan issue , because "hubs" don't look far enough into the packet to be aware of vlans.
If your addressing is as you describe, then you are dealing with multiple subnets (which are usually put into their own vlans). To move traffic between subnets (or vlans) you need a router or layer three switch.
This is NOT a BCM problem, unless the BCM is your router. This is a network issue.
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