# Backwards Compatibility

**URL:** https://forum.kirupa.com/t/backwards-compatibility/278044
**Category:** flash
**Created:** [December 21, 2008, 3:50am UTC](https://forum.kirupa.com/t/backwards-compatibility/278044 "2008-12-21T03:50:43Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![BenBart](https://avatars.discourse-cdn.com/v4/letter/b/6de8d8/32.png) [@BenBart](https://forum.kirupa.com/u/BenBart)
#### Post date: [December 21, 2008, 3:50am UTC](https://forum.kirupa.com/t/backwards-compatibility/278044/1 "2008-12-21T03:50:43Z")

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I just bought the new CS4 master collection, but I’m worried about backwards compatibility. Does CS4 still publish to Flash 6?

Is there a way to go into legacy mode?

(I’m waiting on the delivery).