A quick way to update all the filecaches can be using a PythonScript node as well , using it in TOPS is a good way ive found to trigger it in sequence . and unlike ROPFetchs in TOPs you dont need to create a explicit node for each filecache .
from nodesearch import parser
# Create a matcher that finds nodes whose name contains filecache
matcher = parser.parse_query("*filecache*")
network = hou.node("/obj/")
for node in matcher.nodes(network, recursive=True):
This looks for all nodes with "filecache" in their name and triggers their Save to Disk button ( execute ) . the nodesearch function can also do "match only on multiple" queries ( more details in the help https://www.sidefx.com/docs/houdini/hom/nodesearch.html )
as long as named your filecache nodes something like "flip_sim_filecache_01" and "whitewater_filecache_07" then you could have a string of Python nodes in TOPS searching for and caching all nodes of that type in order ( the first nodesearch looking for *flip* and *filecache* , then the next python node looking for the *whitewater* + *filecache* nodes ) . this was ideal for a project that has potentially lots of different filecaches that you dont want to explicitly path to .