I have read acelab support blog that Trim can be bypassed (in safe mode) & data can be recovered.
I want to know whether anyone has done this & is it applicable to all SSD's ? (Whether all ssd's support safe mode)
What are practical implementation challenges .(These questions might not be applicable for Arvika as he might have already done this )

That's not a entirely accurate description - consider it more of an interruption in the process, rather than bypass.

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Yes you are right , ace should have used interruption than bypass.