I am creating an animated Plotly scatter map where each point represents a "tiny home" listing. The point populates on the date the listing is created:

But as you can see (see below), the points don't persist. That is, the point representing that listing only populates on the day it's created.

I would like for a point to persist throughout the entire visualization once populated. The visualizations I've found seem to do this without additional tweaking, and I can't figure out why this is happening this my plot. Data is formatted as seen below:
id area city state lat lng price text
createdat title
2021-02-08 Fully-Converted Diesel School Bus Home 23421 314 Brandon SD 43.600000 -96.590000 37000.0 Brandon,SD
NEW Luxurious - Full Kitchen - Full Bath 26' 23419 221 Oregon City OR 45.330000 -122.570000 99000.0 Oregon City,OR
2021-02-07 Beautiful New Container Home For Sale 23418 320 Liberty City TX 32.380000 -94.870000 65000.0 Liberty City,TX
3 Bed 2 Bath Tiny Duplex 23417 399 Kennesaw GA 34.000000 -84.620000 27800.0 Kennesaw,GA
Beautiful Off Grid Skoolie (Ready To Roam) 23416 143 The Hills TX 30.310000 -97.940000 52500.0 The Hills,TX
Any insight or guidance on how to ensure these points are created on their creation data and persist throughout the entire visualization would be so helpful! Thank you!!!