reledmac use one individual file by series of endnotes : .Aend, .Bend, .Cend etc. See the changelog in reledmac handbook or https://github.com/maieul/ledmac/commit/7fedc07f5bf2af21c86a237957790cb6fdce78a7#diff-60c898960cc69e6fde87e84ddef7d910R11391

TeX.gitignore

@@ -49,8 +49,8 @@ acs-*.bib
 *.snm
 *.vrb
 
-#(e)ledmac/(e)ledpar
-*.end
+#(r)(e)ledmac/(r)(e)ledpar
+*.?end
 *.[1-9]
 *.[1-9][0-9]
 *.[1-9][0-9][0-9]