WQC-HC49SMD is popularly said to be an "unreal SMD" quartz crystal. Why do say that? This starts with its production process. WQC-HC49SMD is processed by flattening the feet of WQC-HC49S - putting on gaskets - cutting the feet and pressing them - taping, so except for the pins, the other parameters are the same. Because there are several more production processes than WQC-HC49S, the corresponding cost will also increase, so the price will be slightly more expensive than WQC-HC49S. The commonly used frequencies are 8.000 MHZ, 11.0592MHZ, 12.000MHZ, 13.560MHZ, etc.
https://www.weetcap.com/Crystals-Oscillators/WEET-SMD-Quartz-Crystal-WQC-HC49SMD.html

Volume can also be said to be package size. The frequency range of this WQC-HC49SMD is: 3.200MHz ~48.000MHz, and the size is 12.5x4.5x4.1mm.

The detailed specifications of WQC-HC49SMD are: frequency difference (25℃):10PPM, 20PPM; aging (maximum): 3PPM/year, temperature range: -20~+70℃/-40~+85℃; load capacitance: 8PF, 20PF.

The characteristics of WQC-HC49SMD are: 2P metal package, quartz crystal, with high precision, high frequency stability and reliability, and excellent environmental resistance, and can reach industrial-grade temperature, comply with RoHS standards, and be green and environmentally friendly.

WQC-HC49SMD quartz crystals are used in card readers, digital cameras, computers, notebooks, routers, switches, monitoring and security, etc.

What should I do if the in and out of a passive crystal resonator are soldered upside down?

Passive crystal resonators have no directionality, so it doesn't matter if they are pasted upside down.
 For the passive crystal resonator itself, whether it is leaded or SMD, or has two, three or four pins, there is no distinction between positive and negative poles when installing it by SMD or welding.