Any else feel that when recording synths to a daw I individually that they never sound the same when summed again in the DAW ? It like the sheen disappears I’ve noticed this with all my audio interfaces.
I’ve never noticed this.
Are you sure it’s not perceptual? I always think it sounds better the moment I play something because of the direct connection between what I do and what I hear.
There has been a ton af double-blind A/B testing in digital audio. It’s unlikely that you’re hearing an actual difference unless you’re using a very old DAW. 
Ableton 10 now and I’ve always noticed this over the years maybe it’s just me
Which AI?
not sure if i understand your question correctly. whats the before/after situation ? i mean how/what do you listen to before recording ? do your sounds sound different after recording or after rendering to a stereotrack ? when you layer sounds or put different sounds together it´s normal that they sound different (masking effects etc). how are you monitoring the sounds before recording ? it´s also normal that sound changes when analog signals are transformed into a digital signal, but that difference shouldn´t be that big when recording with good resolution and good levels.
After recording to my ears when each recorded track levels are as close has possible to what they were on the hardware mix its sound different. I record at 24bit 48khz. Drum material I find ok synths with effects definitely sound different to my ears anyway and not in a good way. I monitor the sounds via my mixer Allen and Heath Qu Pac and have internal monitoring of in Ableton.
Warp is of in Ableton Qu Pac direct recording probably better. Maybe it’s a combination of factors a play
I’ve done a bunch of A/B tests recording filter sweeps with high resonance from a Moog Little Phatty into and apogee ensemble thunderbolt at various sample rates. Surprisingly I can tell a difference between the signal being monitored through logic, vs the logic recording. Some of the very upper harmonic content is diminished in the recording. This had lead me to make my recordings at 96k sample rate which I have found in my scenario it captures more clearly these upper harmonics…
My ears are very sensitive to treble. I always lower the high end when EQing anything, and I’ve compared this to my friends mixes and it has lead me to believe I’m treble sensitive and so can pick this stuff out.
This is all very subtle though and I don’t expect any casual listener to have any idea whatsoever about any of this… It’s not of any kind of caliber whatsoever to really be by people not intently A/Bing to pick it out…
In case anyone wants to debate this, for me it’s absolutely true so I’m OK if you don’t believe me or don’t think it’s true for you, that’s OK… 
People might not like this either but I can tell the difference between Ableton and Logic, and in my personal opinion Logic sounds slightly better to my ears…
If it’s anything more than this subtleness there’s probably something up with the signal chain somewhere…