I run my model on Mplus and lavaan. Results are 99.99% similar except SRMR in Mplus is .063 while in lavaan is .045
I don’t know why they are different while other indices are identical.
In lavaan, fitMeasures() even produces srmr_mplus (.281) and srmr_mplus_nomean (.045). Both are very much different with SRMR from Mplus.
Thank you very much,